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  • Comment: Numerous assertions are not supported by reliable independent secondary sources. Subject may be notable, but draft needs references to substantial coverage about Till in published works. Paul W (talk) 19:16, 11 April 2025 (UTC)
  • Comment: In accordance with the Wikimedia Foundation's Terms of Use, I disclose that I have been paid by my employer for my contributions to this article. Adcoideas (talk) 19:16, 26 March 2025 (UTC)


John E. Till
Ph. D., RADM, US Navy Reserve, Ret.
headshot of John Till
John Till
Born(1945-01-26)January 26, 1945
Orangeburg, South Carolina
Alma materUS Naval Academy, 1967 (BS)

Colorado State University, 1972 (MS)

Georgia Institute of Technology, 1976 (Ph. D.)
Known forNational Cancer Institute (NCI) Study of Downwinders from Nevada Test Site

Hanford Environmental Dose Reconstruction
Rocky Flats Soil Cleanup Level Study

US Atomic Veteran Studies
AwardsHealth Physics Society Elda E Anderson Award

E.O. Lawrence Award
L.S. Taylor Medal
Health Physics Society’s Distinguished Scientific Achievement Award

Health Physics Journal “Paper of the Year” Award
Scientific career
FieldsRadiological Risk Assessment and Environmental Analysis
ThesisThe Toxicity of Uranium and Plutonium to the Developing Embryos of Fish (1976)
Doctoral advisorGeoffrey G. Eichholz, Ph.D.
Other academic advisorsBernd Kahn Ph. D.

Karl Z. Morgan, Ph. D.

C. J. Roberts, Ph. D
John E. Till

Ph. D., RADM, US Navy Reserve, Ret.
AllegianceUnited States
Service / branchUnited States Navy
United States Navy Reserve
Years of service1967-1999
RankRear Admiral (O8)
CommandsCommanded seven Selected Reserve Units

Commander Readiness Command Region TEN Deputy Commander US Submarine Force Atlantic Fleet Deputy Commander US Strategic Command

Chairman National Navy Reserve Policy Board
AwardsDefense Distinguished Service Medal

Legion of Merit
Meritorious Service Medal (2)
Commendation Medal (2)

Achievement Medal

John E. Till, Ph.D., is an American scientist, Navy Reserve Flag Officer, and farmer. He is currently the president of Risk Assessment Corporation and Embeford Farm of SC, LLC.

Early life and education

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John Till attended primary and secondary school in East Point, Georgia, a suburb of Atlanta. During the summers of his childhood, he worked with his three uncles and grandfather on their dairy farm near Orangeburg, South Carolina.[1] He was encouraged to apply for admission to the US Naval Academy by his uncles who served in the Pacific in the navy in WWII and was admitted as a fourth class midshipman in June, 1963.[2]

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Till graduated with distinction from the US Naval Academy in 1967[3][4]. Following navy nuclear power training and submarine school, he served aboard the USS Guardfish (SSN 612) where he qualified in submarines[5]. He continued his navy career in the US Navy Reserve retiring as a Two Star Admiral (O8) in 1999.[6] As a reserve flag officer, he served as Chairman on the National Navy Reserve Policy Board, Commander Reserve Readiness Command Region TEN, Deputy COMSUBLANT, Director Submarine Reserve, and Mobilization Assistant CINCUSSSTRATCOM[7] . He is the recipient of the Department of Defense Distinguished Service Medal, the Legion of Merit, Navy Meritorious Service Medal (two awards), Commendation Medal (two awards), and the Navy Achievement Medal.[8]

Scientific career

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Following his active-duty service, he received his M.S. degree in radiation biology and health physics from Colorado State University in 1972[9]. He earned his Ph.D. in nuclear engineering from the Georgia Institute of Technology in 1976[10] while also working on the staff of the Health and Safety Research Division at the Oak Ridge National Laboratory (ORNL)[11]. His doctoral research at Oak Ridge focused on the impact of highly toxic isotopes of uranium-232, plutonium-238, and plutonium 244 in the aquatic environment in support of advanced nuclear reactor fuels.[12]

Following the death of two uncles on the farm, in 1977, he moved back to his family’s 1100-acre dairy farm in South Carolina to prevent the farm’s sale and to carry on its heritage.[13][14]

He simultaneously founded Risk Assessment Corporation[15], a privately-owned business that enabled him to pursue his scientific interests in radiological risk assessment while operating the farm.[16] From its incorporation in 1977, RAC was a virtual company that included experts who lived across the US and who brought different scientific disciplines required to estimate source terms, transport, exposure, dosimetry and risk from radioactive materials released to the environment.

Till’s contributions to science over the past 50 years have made a lasting impact on our knowledge of risk of exposure to radioactive materials released to the environment from nuclear facilities and significantly enhanced the public’s understanding and acceptance of nuclear energy[17][18]. Leading RAC, he continued to focus on mathematical modeling of radioactive materials in the environment and their dose to humans[19] and the communication of risk[20]. When Till began his career, the field was a collection of disparate disciplines such as nuclear engineering, meteorology, hydrology, and dosimetry working independently without a synchronous connection[21].

Till recognized that being able to calculate radiation doses accurately and rapidly to large numbers of people and to clearly communicate the risk of exposure would be critical to the development and future of nuclear technologies[22].

To improve the process, in 1981 Till approached the US Nuclear Regulatory Commission for support to publish the first textbook compiling the mathematical methods and processes used to estimate the transport and impact of radioactive materials released to the environment into a single reference source. He also gathered the top scientists in their respective fields to help. The result was 'Radiological Assessment, A Textbook on Environmental Dose Analysis'[23]. This landmark volume effectively created a new field of science that Till would lead for the next 50 years. Till subsequently co-edited a monumental update, Radiological Risk Assessment and Environmental Analysis[24], published by Oxford University Press, which remains a definitive reference used by radiation scientists today. Till’s scientific achievements include over two hundred scientific publications and books that stress new approaches to apply and simplify transport and fate mechanisms of radioactive materials in the environment[25].

His textbook and technical methods of application were applied to events such as Three Mile Island[26] and Chernobyl[27] and gained him recognition as a scientist. Consequently, in 1983 he received the Health Physics Society Elda E Anderson Award given to scientists under 40 in recognition of their excellence in research and significant contributions to science[28].

Till’s pioneering leadership in historical dose reconstruction is one of his most distinctive contributions to science[29]. He was the principal investigator in historical dose reconstruction studies for the Nevada Test Site[30], the Hanford Site[31], the Rocky Flats Site[32], the Fernald Feed Materials Facility[33], the Savannah River Site[34], the Apollo Uranium Processing Facility[35], the Cerro Grande Fire at the Los Alamos National Laboratory[36], and the Woolsey Fire at Santa Susana Field Laboratory[37]. John’s research on these and other facilities and accidents involving the release of radioactive materials to the environment established a new paradigm for environmental radiological risk assessment that spans 50 years and has been used as model for many other researchers both in the US and internationally[38]

Key research studies

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National Cancer Institute (NCI) Study of Downwinders from Nevada Test Site

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The Three Mile Island accident in 1979 and the Chernobyl accident in 1986 highlighted issues about public exposure to radioactive materials in the environment. Downwinders from the atmospheric tests at the Nevada Test Site became concerned about increases in cancer. In the early 1980s the NCI supported a $6M dosimetry and epidemiological study at the University of Utah to determine whether there was a higher incidence of cancer in individuals in southwestern Utah, an area that received the highest levels of fallout deposition[39]. Till was recruited by Dr. Walter Stevens, Dean of the School of Medicine at the University of Utah to lead the dosimetry team.

Over the next four years, John applied his knowledge and experience to reconstruct doses and their uncertainties using pathway analysis on a scale that had never been attempted before. New transport models had to be developed, and managing the data and calculations pushed the bounds of existing computer technology. Two studies were conducted: a thyroid disease study and a leukemia case-control study. In the thyroid disease study John’s experience as a dairy farmer helped identify farmers and dairies and feeding regimes of cows, all critical to estimating the radiation dose to thyroid from the transport of radioiodine through the grass-cow-milk pathway and consumption of milk by children[40]. The results of the thyroid disease study showed no increase in thyroid disease among the 3,545 person cohort[41]. The leukemia case control study involved 1,177 leukemia cases with 5,330 controls. John and his team reconstructed radiation doses by using historical measurements of fallout deposition and residence histories of persons exposed[42]. The results of the leukemia case control study showed no excess of leukemia among residents who lived downwind of the Nevada Test Site. Both studies were published in the prestigious Journal of the American Medical Association.[43][44][45] This work was Till’s introduction in directing large scale historical radiation dose reconstruction studies.

Hanford Environmental Dose Reconstruction:

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In 1986, the Department of Energy (DOE) made available ~19,000 pages of documented releases of radioactive materials at the Hanford facility in southeastern Washington from 1944 through 1957 where plutonium was produced for the first atomic bombs[46]. The data clearly showed these releases were significantly greater than allowable by current standards and alarmed government officials and the public and a scientific panel was formed to determine if radioactive material released to the environment could potentially harm the public[47]. The governors of Washington and Oregon and the DOE agreed to initiate an independent technical panel to direct a historical reconstruction study[48]. The Hanford Environmental Dose Reconstruction Project (HEDR) study was supported by DOE with a projected cost of $25M. The technical work was to be performed by Battelle Pacific Northwest Laboratory (PNL), a major DOE contractor at the site. Till was selected by the Governors of Washington and Oregon and the DOE along with sixteen other scientists, tribal and public representatives to serve on the Technical Steering Panel (TSP), and he was elected chairman[49] at the panel’s first meeting in May 1988. This study of a major nuclear weapons facility by an independent panel was unprecedented. Till faced an angry and skeptical public, a skeptic DOE contractor, multiple pending legal actions, doubting Native American tribes, limited access to classified technical information, and a perceived conflict of interest due to being paid by the DOE. Furthermore, he was at the helm of the costliest study of its kind ever undertaken, with virtually no credibility with the public, the tribes, and most of his peers. In addition to these obstacles, Till knew he had to follow the basic principles of science including transparency, repeatability, and clear and available documentation if the project was to succeed. Over the next six years, Till guided the TSP through groundbreaking and innovative decisions. Till knew if he could not build trust and credibility with the public, the study would fail[50]. He announced that the study would be an open process where citizens could review the panel’s progress and comment on work[51]. He met personally with the Secretary of Energy, Admiral James D Watkins, and received support to declassify records needed to reconstruct releases to air and to the Columbia River.[52][53] Till met with Senator John Glenn and representatives of the DOE and the Centers for Disease Control (CDC) to transfer financial support for the study to CDC to eliminate any financial conflict of interest.[54] He met with local farmers to get their support[55] to supply essential information about dairy feeding practices that was critical to estimating the concentration of radioiodine in milk, the dominant pathway for exposure of children to radioactive iodine which is the most significant of the radioactive materials released to air in terms of radiation dose.[56] He worked privately with eight Native American tribes[57] to gain their support and provide information on dietary habits and customs to estimate doses to this potentially highly exposed population. Under Till’s leadership, the TSP slowly earned credibility and trust with the public, scientific peers, and Native Americans. In July 1990,[58][59] Till announced through national news networks preliminary results that approximately 800,000 curies of radioactive iodine were likely released to the atmosphere from Hanford operations between December 1944 and 1959. Preliminary estimates of doses to the thyroids of children who drank contaminated milk were sufficiently elevated to potentially lead to an increase of thyroid cancer in the area. He recommended to DOE and CDC that a parallel epidemiological study of thyroid disease be initiated and directed that the dosimetry being developed by the TSP be redesigned to support this epidemiological study. The technical methods Till and his colleagues developed in the HEDR Project to estimate radiation dose were subsequently used by the Fred Hutchinson Cancer Research Center to carry out an epidemiological study that showed there was no excess of thyroid disease to the population around Hanford.[60] Under Till’s leadership, the TSP established a new paradigm that would serve as a model for future public studies across other DOE facilities.[61] The TSP’s efforts also saved tens of millions of taxpayer dollars through resolution of pending legal cases using the technical methods developed by the panel. For his exemplary leadership and cutting-edge research, the Secretary of Energy presented Till with the Department of Energy’s EO Lawrence Medal in May 1994.[62]

Rocky Flats Soil Cleanup Level Study

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In 1998 Till was asked by the DOE and the Citizen’s Advisory Board to develop an acceptable level of cleanup of plutonium in soil at the 5,200-acre Rocky Flats facility near Denver.[63] The technical work was conducted by Till and his RAC team with advisory input provided by a panel of fifteen local scientists, politicians, and activists. Most of the plutonium contamination was low level but many citizens insisted on cleaning up the site to background levels (approximately 0.1 picocuries per gram of soil) - a process estimated to cost $37B and one that would essentially destroy thousands of undisturbed, pristine acres of land. Over a two-year period, using technical methods he previously published[64], Till worked with the panel to recommend a consensus level of 35 picocuries per gram of plutonium in soil[65] as an acceptable level for cleanup. The value subsequently used by DOE was 50 picocuries, very close to Till’s recommendation. Till’s ability to effectively communicate with the public, explaining complex concepts and highly technical calculations was an unparalleled success. On December 8, 2005, the Deputy Secretary of Energy certified that the cleanup was completed ahead of schedule at a cost of $7B and at a savings to taxpayers of ~$30B.[66] Till’s sensitivity to public concerns without compromising his scientific principles showed how industry, science, and the public can work together effectively to make sensible decisions[67]. Most importantly, 4,000 of the 5,200 acres of the land at Rocky Flats were left undisturbed and remained in their natural state and are now officially designated as the “Rocky Flats National Wildlife Refuge” that is open to the public[68].

US Atomic Veteran Studies

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In 2000 Till was asked by the National Academy of Sciences (NAS) to chair a distinguished committee mandated by Congress charged with reviewing the dose reconstruction program of Atomic Veterans administered by the Defense Threat Reduction Agency (DTRA). The Atomic Veterans[69] consisted of over ~230,000 military persons who participated in nuclear atmospheric testing between 1945 and 1963. More than 60% of atomic veterans were Navy personnel. Till met with then Secretary of the Veterans Affairs, the Honorable Anthony J. Principi, to ensure their support and the Atomic Veterans Association members to listen to their concerns and to explain the committee’s process. The committee’s report, “A Review of the Dose Reconstruction Program of the Defense Threat Reduction Agency”[70], proposed major improvements to the compensation program to enhance its transparency and effectiveness that are still in place today. Other tangible outcomes included the creation of the Veterans Advisory Board for Dose Reconstruction and the digitalization of historical records related to the Atomic Veterans[71].

Under Title 38, Code of Federal Regulations, Part 3 Atomic Veterans are compensated for their service during atmospheric nuclear weapons testing because it was assumed they had a higher incidence of cancer related to their exposure. But the veterans had never been studied to determine if higher incidence of cancer existed and if so, could it be linked to their radiation exposure during nuclear testing. Till’s NAS committee led to the digitalization of the veterans’ historical records and with funding from the National Cancer Institute, Till and his RAC team were tasked to calculate detailed doses and uncertainties for 114,270 veterans to be used in the first radiation epidemiological study of the Atomic Veterans.[72] Until then it was assumed the Atomic Veterans had a higher incidence of cancer but never confirmed. Till’s researchers along with a team of radiation epidemiologists concluded for the first time that there was no evidence of increased risk of cancer or ischemic heart disease among the veterans as previously assumed.[73] The analysis also showed that the doses received by the Atomic Veterans were remarkably low, less than about two times natural background radiation. This finding illustrates the remarkable attention that was given to keep radiation dose at a low level in a potentially high exposure battle situation. John applied his radiation dosimetry methodology to exposure of shipboard personnel to asbestos, a highly carcinogenic material previously used for insulation aboard ship[74] . His exposure estimates combined with epidemiological analyses showed a large excess of mesothelioma and asbestosis deaths among atomic veterans that were not present among navy personnel with minimal exposure to asbestos. These results are being incorporated into a broader study that will include one million individuals, the Million Person Study, that uses consistent dosimetry[75] across all persons and will have major implications in our understanding of low-dose radiation effects – one of the most critical areas of research in radiation protection[76].

Awards

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  • In 1995, Dr. Till received the E.O. Lawrence Award from the U.S. Department of Energy (DOE) in the field of Environmental Science and Technology. He was selected for this honor for his work in public involvement and research in dose reconstruction.

Volunteer service

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Till was first elected to the National Council on Radiation Protection and Measurements (NCRP) in 1984 and has long served the organization in many capacities, including Vice President for Environmental Issues, member of the Board of Directors, and chair of numerous committees. He was elected a Distinguished Emeritus Member of the NCRP in 2004[83].

Till has also served in many capacities, often as chair, for numerous agencies and organizations, including the National Academy of Sciences, the International Commission on Radiological Protection, the International Atomic Energy Agency, the Environmental Protection Agency, the Congressional Office of Technology Assessment, the Department of Energy, the National Cancer Institute, the Nuclear Regulatory Commission, the International Radiation Protection Association, the SC Governor’s Nuclear Advisory Council, the Education and Training Committee of the Health Physics Society, and the South Carolina Farm Bureau.

References

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  1. ^ Mckinney, John; Lancaster, Bob. ""Harvest Cover-The Good Earth Gives Forth"". The Progressive Farmer. 82 (7).
  2. ^ "Annual register of the United States Naval Academy. Annapolis, Md". U.S. Government Printing Office. 1964.
  3. ^ "Annual register of the United States Naval Academy. Annapolis, Md". U.S. Government Printing Office. 1968.
  4. ^ The Nineteen Hundred and Sixty Seven Lucky Bag. Annapolis, Md.: United States Naval Academy. 1967.
  5. ^ "John Earl Till". The Navy Log. The U.S. Navy Memorial Foundation.
  6. ^ Haworth, Andrew (March 28, 1999). "Ceremony on 'Yorktown' marks Rear Admiral John Till's retirement". The Times and Democrat.
  7. ^ "John Earl Till". The Navy Log. The U.S. Navy Memorial Foundation.
  8. ^ "John Earl Till". The Navy Log. The U.S. Navy Memorial Foundation.
  9. ^ Whicker, F.W. (February 2014). "Introduction of the 37th Annual Lauriston S. Taylor Lecturer". Health Physics. 106 (2): 146–147. Bibcode:2014HeaPh.106..146W. doi:10.1097/HP.0000000000000003. PMID 24378487.
  10. ^ "John E. Till". National Council on Radiation Protection and Measurements. 15 June 2015.
  11. ^ Till, J.E. (January 1975). Comparison of the potential radiological impact of recycle 233U HTGR fuel and LMFBR plutonium fuel released to the environment. Oak Ridge National Lab., Tenn (USA).{{cite book}}: CS1 maint: location missing publisher (link)
  12. ^ Till, J. E. (1978). "The Effect of Chronic Exposure to 238Pu(IV) Citrate on the Embryonic Development of Carp and Fathead Minnow Eggs". Health Physics. 34 (4): 333–43. Bibcode:1978HeaPh..34..333T. doi:10.1097/00004032-197804000-00003. PMID 566735.
  13. ^ Milkie, Joyce (1990). "A Nuclear Scientist Down on the Farm". No. 2. Sandlapper, The Magazine of South Carolina. pp. 80–82.
  14. ^ Pope, Charles; Pardue, Douglas (November 1993). "Scientist commanding bomb research from farm post". The State Newspaper.
  15. ^ "About Us". Risk Assessment Corporation.
  16. ^ Hayworth, Andrew (March 21, 1999). "Nuclear Pioneer". The Times and Democrat.
  17. ^ Till, John E. (1995). "Building Credibility in Public Studies". American Scientist. 83 (5): 468–73. Bibcode:1995AmSci..83..468T. JSTOR 29775524.
  18. ^ Till, John (1997). Environmental Dose Reconstruction (185 ed.). Chilton, Didcot, Oxfordshire OX11 0RQ, UK: Radiological Protection Bulletin.{{cite book}}: CS1 maint: location (link)
  19. ^ Till, J. E.; Hoffman, F. O.; Dunning, D. E. (1979). "A New Look at 99Tc Releases to the Atmosphere". Health Physics. 36 (1): 21–30. Bibcode:1979HeaPh..36...21T. doi:10.1097/00004032-197901000-00005. PMID 570562.
  20. ^ Till, John (2011). "Building Trust, Credibility, and Respect in Environmental Risk Assessment". Health Physics.
  21. ^ Till, John E.; Meyer, H. Robert (September 1983). Radiological Assessment: A Textbook on Environmental Dose Analyses. United States Nuclear Regulatory Commission.
  22. ^ Templeton, William L.; Till, John E. (1984). Radiological Assessment: Predicting the Transport, Bioaccumulation, and Uptake by Man of Radionuclides Released to the Environment (76 ed.). Bethesda, Md.: National Council on Radiation Protection and Measurements. ISBN 0-913392-66-9.
  23. ^ Till, John E.; Meyer, H. Robert (September 1983). Radiological Assessment: A Textbook on Environmental Dose Analyses. United States Nuclear Regulatory Commission.
  24. ^ Till, John E.; Grogan, Helen A. (July 10, 2008). Radiological Risk Assessment and Environmental Analysis. Oxford University Press. ISBN 9780195127270.
  25. ^ "About Us". Risk Assessment Corporation.
  26. ^ Meinhold, Charles B.; Leonard, Emma; Jacobs, Donald; Templeton, William; Till, John E. (1987). Guidelines for the release of waste water from nuclear facilities with special reference to the public health significance of the proposed release of treated waste waters at Three Mile Island. Bethesda, Md.: National Council on Radiation Protection and Measurements. ISBN 091339288X.
  27. ^ Till, John E. (February 1997). "A 1993 report on reconstruction of environmental exposures and uncertainties in support of epidemiological studies related to low-dose radiation". Stem Cells. 15 (S1): 175–181. doi:10.1002/stem.5530150725. PMID 9368302.
  28. ^ "Elda E. Anderson Award Recipients". Health Physics News.
  29. ^ Till, John E. (March 11, 2013). ""When Does Risk Assessment Get Fuzzy?" 37th Taylor Lecture presented at the annual Meeting of the National Council on Radiation Protection and Measurements". Health Physics. 106 (2).
  30. ^ Kerber, R. A.; Till, J. E.; Simon, S. L.; Lyon, J. L.; Thomas, D. C.; Preston-Martin, S; Rallison, M. L.; Lloyd, R. D.; Stevens, W (November 3, 1993). "A cohort study of thyroid disease in relation to fallout from nuclear weapons testing". JAMA. 270 (17): 2076–2082. doi:10.1001/jama.1993.03510170066032. PMID 8411574.
  31. ^ Till, John E. (1995). "Building Credibility in Public Studies". American Scientist. 83 (5): 468–73. Bibcode:1995AmSci..83..468T. JSTOR 29775524.
  32. ^ Till, John E.; Rood, Arthur S.; Voillequé, Paul G; McGavran, Patricia D; Meyer, Kathleen R; Grogan, Helen A; Sinclair, Warren K; Aanenson, Jill W; Meyer, H Robert; Mohler, H Justin; Rope, Susan K; Case, Marilyn J (September 2002). "Risks to the public from historical releases of radionuclides and chemicals at the Rocky Flats Environmental Technology Site". J Expo Anal Environ Epidemiol. 12 (5): 355–72. Bibcode:2002JESEE..12..355T. doi:10.1038/sj.jea.7500237. PMID 12198584.
  33. ^ Till, J. E.; Killough, G. G.; Meyer, K. R.; Sinclair, W. S.; Voillequé, P. G.; Rope, S. K.; Case, M. J. (2000). "The Fernald Dosimetry Reconstruction Project". Technology. 7: 270–295.
  34. ^ Charles, Pope (November 14, 1993). "Scientists reconstructing SRS past". The State Newspaper.
  35. ^ Rood, Arthur S.; Grogan, Helen A.; Mohler, H Justin; Meyer, Kathleen R.; Voillequé, Paul G.; Till, John E. (October 16, 2019). "Reconstruction of atmospheric concentrations of enriched uranium from the former Apollo facility, Apollo, Pennsylvania, USA". J Environ Radioact . 211. doi:10.1016/j.jenvrad.2019.106045. PMID 31629194.
  36. ^ Grogan, Healther A.; Aanenson, Jill W.; McGavran, Patricia D.; Meyer, Kathleen R.; Mohler, Justin; Mohler, Shawn S.; Rocco, James R.; Rood, Arthur S.; Till, John E.; Wilson, Lesley H. (November 16, 2006). "Modeling of the Cerro Grande Fire at Los Alamos: An Independent Analysis of Exposure, Health Risk, and Communication with the Public". Applied Modeling and Computations in Nuclear Science. ACS Symposium Series. 945: 71–92. doi:10.1021/bk-2007-0945.ch006. ISBN 978-0-8412-3982-1.
  37. ^ Rood, Arthur S.; Mohler, Justin H.; Grogan, Helen A.; Mangini, Colby; Caffrey, Emily .; Till, John E. (April 1, 2023). "Potential Airborne Releases and Deposition of Radionuclides from the Santa Susana Field Laboratory during the Woolsey Fire". Health Physics. 124 (4): 257–284. Bibcode:2023HeaPh.124..257R. doi:10.1097/HP.0000000000001665. PMC 9940825. PMID 36749301.
  38. ^ Haworth, Andrew (March 21, 1999). "Nuclear Pioneer". The Times and Democrat.
  39. ^ Wachholz, B. W. (November 1990). "Overview of the National Cancer Institute's activities related to exposure of the public to fallout from the Nevada Test Site". Health Physics. 59 (5): 511–4. Bibcode:1990HeaPh..59..511W. doi:10.1097/00004032-199011000-00002. PMID 2211110.
  40. ^ Simon, S. L.; Lloyd, R. D.; Till, J. E.; Hawthorne, H. A.; Gren, D. C.; Rallison, M. L.; Stevens, W (November 1990). "Development of a method to estimate thyroid dose from fallout radioiodine in a cohort study". Health Physics. 59 (5): 669–91. Bibcode:1990HeaPh..59..669S. doi:10.1097/00004032-199011000-00017. PMID 2211123.
  41. ^ Kerber, R. A.; Till, J. E.; Simon, S. L.; Lyon, J. L.; Thomas, D. C.; Preson-Martin, S; Rallison, M. L.; Lloyd, R. D.; Stevens, W (November 3, 1993). "A cohort study of thyroid disease in relation to fallout from nuclear weapons testing". JAMA. 270 (17): 2076–2082. doi:10.1001/jama.1993.03510170066032. PMID 8411574.
  42. ^ Simon, S. L.; Till, J. E.; Lloyd, R. D.; Kerber, R. L.; Thomas, D. C.; Preson-Martin, S; Llyon, J. L.; Stevens, W (April 1995). "The Utah Leukemia Case-Control Study: dosimetry methodology and results". Health Physics. 86 (4): 460–71. doi:10.1097/00004032-199504000-00003. PMID 7883558.
  43. ^ Till, J. E.; Simons, S. L.; Kerber, R.; Lloyd, R. D.; Stevens, W.; Thomas, D. C.; Lyons, J. L.; Preston-Martin, S. (April 1995). "The Utah Thyroid Cohort Study: Analysis of the Dosimetry Results". Health Physics. 68 (4): 472–483. doi:10.1097/00004032-199504000-00004. PMID 7883559.
  44. ^ Kerber, R. A.; Till, J. E.; Simon, S. L.; Lyons, J. L.; Thomas, D. C.; Preston-Martin, S.; Rallison, M. L.; Lloyd, R. D.; Stevens, W. (November 3, 1993). "A Cohort Study of Thyroid Disease in Relation to Fallout from Nuclear Weapons Testing". JAMA. 270 (17): 2076–2082. doi:10.1001/jama.1993.03510170066032. PMID 8411574.
  45. ^ Stevens, W.; Thomas, D. C.; Lyon, J. L.; Till, J. E.; Kerber, R. A.; Simon, S. L.; Lloyd, R. D.; Elghany, N. A.; Preston-Martin, S. (August 1, 1990). "Leukemia in Utah and radioactive fallout from the Nevada test site". JAMA. 264 (5): 585–591. doi:10.1001/jama.1990.03450050043025. PMID 2366297.
  46. ^ Steele, K. D. (January 1988). "Hanford's bitter legacy". Bulletin of the Atomic Scientists. 44 (1): 17–23. Bibcode:1988BuAtS..44a..17S. doi:10.1080/00963402.1988.11456096.
  47. ^ "Hanford Health Effects Panel" (PDF). Washington Department of Social and Health Services, Office of Radiation Protection. September 26, 1986.
  48. ^ Sivula, Chris (May 18, 1988). "DOE dose study panel praised despite dispute". Tri City Herald.
  49. ^ Goetz, Janet (May 18, 1988). "Open probe of Hanford radiation effects vowed". The Oregonian.
  50. ^ Till, John E. (1995). "Building Credibility in Public Studies". American Scientist. 83 (5): 468–73. Bibcode:1995AmSci..83..468T. JSTOR 29775524.
  51. ^ Goetz, Janet (September 26, 1988). "Hanford panel promotes open-information policy". The Oregonian.
  52. ^ Steele, Karen Dorn (December 12, 1989). "DOE releasing more Hanford data". The Spokesman Review.
  53. ^ "Energy Department releases classified Hanford Papers". The Oak Ridger. Associated Press. December 14, 1989.
  54. ^ Steele, Karen Dorn (February 27, 1990). "Take health studies away from DOE, panel urges". The Spokesman Rebiew.
  55. ^ Lindblom, Mike (October 26, 1988). "Hanford critic endorses chairman of dose panel". Tri-city Herald.
  56. ^ Geranios, Nicholas K. (July 26, 1983). "Scientific sleuths trace Hanford radiation path". Tacoma News Tribune. Associated Press.
  57. ^ Schneider, Keith (September 3, 1990). "Nuclear Complex Threatens Indians". New York Times.
  58. ^ Smith, R. Jeffrey (July 13, 1990). "Study of A-Plant Neighbors' Health Urged". The Washington Post.
  59. ^ Schneider, Keith (July 13, 1990). "Report Warns of Impact of Hanford's Radiation". New York Times.
  60. ^ Davis, Scott; Kopecky, Kenneth J.; Hamilton, Thomas E. (June 21, 2002). "Hanford thyroid disease study". Centers for Disease Control and Prevention.
  61. ^ Till, John (1995). "Building Credibility in Public Studies". American Scientist. 83 (5): 468-you 73. Bibcode:1995AmSci..83..468T. JSTOR 29775524.
  62. ^ Pope, Charles (May 12, 1995). "S.C. scientist wins DOE award". The State.
  63. ^ Till, J. E.; Meyer, K. R. (April 2001). "Public involvement in science and decision making". Health Physics. 80 (4): 370–378. Bibcode:2001HeaPh..80..370T. doi:10.1097/00004032-200104000-00014. PMID 11281205.
  64. ^ Till, J. E.; Moore, R. E. (September 1988). "A pathway analysis approach for determining acceptable levels of contamination of radionuclides in soil". Health Physics. 55 (3): 541–8. Bibcode:1988HeaPh..55..541T. doi:10.1097/00004032-198809000-00005. PMID 3170208.
  65. ^ "Independent Review of Soil Action Levels Complete". Rocky Flats Citizens Advisory Board. The Advisor. Summer 2000.
  66. ^ Kochaniec, Jr., George. "Senator Wayne Allard shakes hands with Deputy Secretary of Energy Clay Sell after announcing the Department of Energy's certification of the Rocky Flats cleanup project on Thursday December 8,2005 during a press conference at the National Renewable". digital.denverlibrary.org. Denver Library.
  67. ^ Till, J. E.; Killough, G. G.; Meyer, K. R.; Aanenson, J. W.; Rood, A. S. (May 2000). "Calculating soil action levels and uncertainties for decision-making during cleanup of contaminated sites". Japan Health Physics Society: 8.
  68. ^ "Rocky Flats Public Opening". Candelas Rocky Flats.
  69. ^ "Public Law 98-542". congress.gov. United States Congress.
  70. ^ National Research Council (2003). A Review of the Dose Reconstruction Program of the Defense Threat Reduction Agency. Washington, DC: The National Academies Press. ISBN 0-309-08902-6.
  71. ^ "Veterans' Advisory Board on Dose Reconstruction".
  72. ^ Till, J. E.; Beck, H. L.; Aanenson, J. W.; Grogan, H. A.; Mohler, H. J.; Mohler, S. S.; Voillequé, P. G. (January 8, 2019). "Dosimetry associated with veterans who participated in nuclear weapons testing". International Journal of Radiation Biology. 98 (4): 610–618. doi:10.1080/09553002.2018.1551639. PMID 30513229.
  73. ^ Boice, J. D.; Cohen, S. S.; Mumma, M. T.; Chen, H.; Golden, A. P.; Beck, H. L.; Till, J. E. (August 3, 2020). "Mortality among U.S. military participants at eight aboveground nuclear weapons test series". International Journal of Radiation Biology. 98 (4): 679–700. doi:10.1080/09553002.2020.1787543. PMID 32602389.
  74. ^ Till, John E.; Beck, Harold L.; Boice Jr., John D.; Mohler, H Justin; Mumma, Michael T.; Aanenson, Jill W.; Grogan, Helen A. (2022). "Asbestos exposure and mesothelioma mortality among atomic veterans". Int J Radiat Biol. 98 (4): 781–785. doi:10.1080/09553002.2018.1551641. PMID 30513236.
  75. ^ Dauer, Lawrence T.; Bouville, André; Toohey, Richard E.; Boice Jr., John D.; Beck, Harold L.; Eckerman, Keith F.; Hagemeyer, Derek; Leggett, Richard W.; Mumma, Michael T.; Napier, Bruce; Pryor, Kathy H.; Rosenstein, Marvin; Schauer, David A.; Sherbini, Sami; Stram, Daniel O.; Thompson, James L.; Till, John E.; Yoder, R Craig; Zeitlin, Cary (2022). "Dosimetry and uncertainty approaches for the million person study of low-dose radiation health effects: overview of the recommendations in NCRP Report No. 178". Int J Radiat Biol. 98 (4): 600–609. doi:10.1080/09553002.2018.1536299. OSTI 1960702. PMID 30452303.
  76. ^ Boice Jr., John D; Quinn, Brian; Al-Nabulsi, Isaf; Ansari, Armin; Blake, Paul K.; Blattnig, Steve R.; Caffrey, Emily A.; Cohen, Sarah S.; Golden, Ashley P.; Held, Kathryn D.; Jokisch, Derek W.; Leggett, Richard W.; Mumma, Michael T.; Samuels, Caleigh; Till, John E.; Tolmachev, Sergei Y.; Yoder, R. Craig; Zhou, Joey Y.; Dauer, Lawrence T. (2022). "A million persons, a million dreams: a vision for a national center of radiation epidemiology and biology". Int J Radiat Biol . 98 (4): 795–821. doi:10.1080/09553002.2021.1988183. PMC 10594603. PMID 34669549.
  77. ^ "Elda E. Anderson Award Recipients". Health Physics News.
  78. ^ Whicker, F. W. (February 2014). "Introduction of the 37th Annual Lauriston S. Taylor Lecturer". Health Physics. 106 (2): 146–147. Bibcode:2014HeaPh.106..146W. doi:10.1097/HP.0000000000000003. PMID 24378487.
  79. ^ Till, John E. (March 11, 2013). ""When Does Risk Assessment Get Fuzzy?" 37th Taylor Lecture presented at the annual Meeting of the National Council on Radiation Protection and Measurements". Health Physics. 106 (2).
  80. ^ Zalenski, Gene (March 4, 2013). "Hometown expert". The Times and Democrat.
  81. ^ Kirk, Scott (July 2020). "Introduction of the 2020 Distinguished Scientific Achievement Award Presented to John E. Till by the Health Physics Society". Health Physics. 119 (6): 669–670. doi:10.1097/HP.0000000000001362. PMID 33109912.
  82. ^ "Health Physics 2023 Michael T. Ryan Outstanding Paper of the Year Award". Health Physics News.
  83. ^ "John E. Till". National Council on Radiation Protection and Measurements. 15 June 2015.
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