site ID

Mound Plant

(Site Profile/Docket Number 028) Location: Miamisburg, Ohio Also Known As: Dayton Project, Miamisburg Closure Project, Miamisburg Environmental Management Project (MEMP), Monsanto Research Corp., MOUND, Mound Site, Units I, III and IV

Special Exposure Cohort Petition Information

The Special Exposure Cohort (SEC) is a unique category of employees established by the Act (42 CFR Part 83). Claims compensated under the SEC do not have to go through the dose reconstruction process. To qualify for compensation under the SEC, a covered employee must meet specific requirements (e.g., must have at least one of 22 “specified cancers,” and have worked for a specified time period at one of the SEC sites). Classes of employees and work sites can be considered for addition to the SEC through a NIOSH petition process. More information about the Special Exposure Cohort can be found on our Frequently Asked Questions page.

Open/Active SEC Petitions

There is currently one open/active SEC petition, Petition 240. NIOSH is reviewing the petition to see if it qualifies for evaluation. If the petition qualifies, it will receive a full evaluation by NIOSH, the Advisory Board on Radiation and Worker Health, and the Secretary of the Department of Health and Human Services.

Class(es) Added to the SEC

  • Employees of the Department of Energy (DOE), its predecessor agencies, and DOE contractors or subcontractors who worked in any areas at the Mound Plant site from October 1, 1949, through February 28, 1959, for a number of work days aggregating at least 250 work days or in combination with work days within the parameters established for one or more other classes of employees in the SECNote: This class was established from Petition 90
  • All employees of the Department of Energy (DOE), its predecessor agencies, and its contractors and subcontractors who had at least one tritium bioassay sample and worked at the Mound Plant in Miamisburg, Ohio from March 1, 1959 through March 5, 1980, for a number of work days aggregating at least 250 work days, occurring either solely under this employment, or in combination with work days within the parameters established for one or more other classes of employees in the Special Exposure CohortNote: This class was established from Petition 171
  • All employees of the Department of Energy, its predecessor agencies, and their contractors and subcontractors who worked at the Mound Plant in Miamisburg, Ohio, from September 1, 1972, through December 31, 1972, or from January 1, 1975, through December 31, 1976, for a number of work days aggregating at least 250 work days, occurring either solely under this employment or in combination with work days within the parameters established for one or more other classes of employees in the Special Exposure CohortNote: This class was established from Petition 207

Classes Not Added to the SEC

  • All employees of the Department of Energy, Department of Energy contractors, or subcontractors who worked in any area at the Mound Plant in Miamisburg, Ohio, during the period from March 1, 1959, through December 31, 2007, except for workers who fall within the Special Exposure Cohort (SEC) classes established by SEC petitions 00171 and 00207Note: This class was established from Petition 90

Petitions Qualified for Evaluation

Below is a list of the petitions that qualified for evaluation. Select a petition on the list to view the table for that particular petition.

SEC Petitions Not Qualifying for Evaluation

Not applicable at this time

Worker Outreach Activities

Based on a recommendation from the Advisory Board to provide workers and site experts with opportunities to participate in developing the technical documents used in dose reconstruction, NIOSH established a Worker Outreach Program. At Worker Outreach Meetings, current and former DOE and AWE employees have opportunities to obtain information about Site Profiles, Technical Basis Documents, and Technical Information Bulletins, and to provide information for consideration and possible use in dose reconstruction. This process is valuable to ensure that the technical documents used in dose reconstruction contain correct and useful information. Worker Outreach Activities for the Mound Plant:

Advisory Board Work Group on Mound Plant

This Work Group is responsible for reviewing the Mound Plant Site Profile, the SEC petition from Mound Plant petitioners, the NIOSH Evaluation Report of the petition, the SC&A Review of the Mound Plant Site Profile, considering issues raised by the Board’s contractor (SC&A) concerning the Site Profile and the petition Evaluation Report, and for assisting NIOSH and SC&A in the resolution of such issues. The Work Group may recommend to the Board, changes in the Site Profile as appropriate. The Work Group should strive to develop a recommendation to the Board on whether a class should be added to the SEC. Work Group Members:

  • Josie Beach (Chair)
  • Bradley P. Clawson
  • Phillip Schofield
  • Paul L. Ziemer, Ph.D.

Meeting Information

Pre-Decisional Document Policy

Please note that as part of the procedures and processes of the Advisory Board’s Work Groups, several kinds of pre-decisional documents may be developed. These pre-decisional documents, such as white papers, matrices, working drafts, etc., are distributed among Work Group members as research and background tools to facilitate discussion and deliberation. Although discussion during a public meeting may cover pre-decisional documents, these documents often are not further revised or finalized, and thus do not reflect the final determination or evaluation of the Advisory Board and its Work Groups. Additionally, some pre-decisional documents not otherwise posted on the website may contain sensitive information, which would require an interested party to obtain such documents by filing a Freedom of Information Act (FOIA) request with the CDC/ATSDR FOIA office at foiarequests@cdc.gov.

Technical Documents

If the energy employee’s personal radiation information is incomplete, NIOSH will use other sources to estimate the radiation dose. This may involve using technical documents called Site Profiles, Technical Basis Documents, and Technical Information Bulletins.

Site Profile

  • Introduction[97 KB (9 pages)]

    Revised March 28, 2013

    Revision Includes: Revises Special Exposure Cohort and to add attribution and annotation information. Reorganizes document to follow standard structure. Updates text in Section 1.1. No changes occurred as a result of formal internal review. Incorporates formal NIOSH review comments.

  • Site Description[464 KB (35 pages)]

    Revised April 1, 2013

    Revision Includes: Incorporates SEC-00090, SEC-00171, and SEC-00207. Updated Table 2-1 with information for 2003 and 2010. Added Special Exposure Cohort information pertaining to the SW Building in Section 2.1.3. Incorporates formal internal and NIOSH review comments.

  • Occupational Medical Dose[188 KB (18 pages)]

    Revised March 14, 2013

    Page Change Revision Includes: Updates the TBD with historical documents captured since the last revision, and adds skin doses for all procedures and periods. Incorporates formal internal review comments. Constitutes a total rewrite of the document.

  • Occupational Environmental Dose[3.4 MB (106 pages)]

    Revised February 7, 2013

    Revision Includes: Adds Special Exposure Cohort Section 4.1.3. Revised Table 4-1 to include end of operation and end of remediation. Revised Section 4.3 to provide direction for assigning environmental dose from 2003 to 2010. Made editorial changes and removed text and references for the Dayton Project. Incorporates formal internal and NIOSH review comments.

  • Occupational Internal Dose[785 KB (59 pages)]

    Revised March 13, 2017

    Revision Includes: Incorporates updated guidance in DCAS-RPRT-005, Rev 00, Alternative Dissolution Models for Insoluble Pu-238, on highly insoluble 238Pu compounds. Minimum detectable amounts updated to reflect the latest available values for the period before Mound closure in 2006. Incorporates formal internal and NIOSH review comments. Constitutes a total rewrite of the document.

  • Occupational External Dose[581 KB (51 pages)]Approved August 11, 2004

Technical Information Bulletins (TIBs)

Advisory Board and NIOSH Discussions on Mound Plant

The Mound Plant discussion papers listed below are working documents prepared by NIOSH or its contractor for use in discussions with the Advisory Board on Radiation and Worker Health or its Working Groups or Subcommittees. Draft, preliminary, interim, and white paper documents are not final NIOSH or Advisory Board (or their technical support and review contractors) positions unless specifically marked as such. These documents represent preliminary positions taken on technical issues prepared by NIOSH or its contractor. The discussion papers have been reviewed to identify and redact any information that is protected by the Privacy Act 5 USC §552a and have been cleared for distribution.

Public Comments on Mound Plant Documents

How to Submit Comments

Comments on Mound Plant Documents can be submitted to the NIOSH Docket Officer electronically by email at nioshdocket@cdc.gov or printed comments can be mailed to: NIOSH Docket Office Robert A. Taft Laboratories, MS-C34 1090 Tusculum Avenue Cincinnati, OH 45226 Please include the Site Profile/Docket Number (028) on all comments.

Comments Received

At this time, no comments have been submitted.

Document Archive for Mound Plant

  • Section 1: Introduction
    • Page Change Revision March 13, 2009[159 KB (8 pages)]Page Change Revision Includes: Approved page change initiated to remove information pertaining to Monsanto Chemical Company, the subject of a class of employees added to the Special Exposure Cohort. These changes occurred on pages 6 and 7. NIOSH required language was revised on page 5 in Section 1.0. Added references on pages 5, 6, and 7, and added the Reference Section on page 8. No changes occurred as a result of formal internal review. Incorporates formal NIOSH review comments. No sections were deleted.
    • Approved September 9, 2004[30 KB (6 pages)]
  • Section 2: Site Description
    • Site Description[442 KB (30 pages)] Page Change Revision March 13, 2009Page Change Revision Includes: Approved page change initiated to remove information pertaining to Monsanto Chemical Company, the subject of a class of employees added to the Special Exposure Cohort. These changes occurred on pages 6 – 13, 15, 16, 18, and 20 in Sections 2.0, 2.2, and 2.3, respectively. NIOSH required language was revised on page 5 in Section 2.0. Updated references on pages 29 – 30 in Reference Section. In this revision, Figure 2-1 was formerly Figure 2-3. Figures 2-1 and 2-2 from the previous revision were deleted. Incorporates formal internal and NIOSH review comments. No sections were deleted.
    • Page Change Revision July 7, 2006[478 KB (33 pages)]
    • Approved March 30, 2004[473 KB (34 pages)]
  • Section 3: Occupational Medical Dose
    • Page Change Revision March 2, 2009[251 KB (18 pages)]Page Change Revision Includes: Approved page change initiated to remove information pertaining to Monsanto Chemical Company, the subject of a class of employees added to the Special Exposure Cohort. In Table 3-2 on page 7 in Section 3.2, a change was made in the first row to remove “Pre” from 1949. NIOSH required language was revised on pages 5 and 6 in Section 3.1. References were updated on pages 6 – 8, 15 in Sections 3.1, 3.2, 3.3, and Reference Section. Incorporates formal internal review comments. No changes occurred as a result of formal NIOSH review. No sections were deleted.
    • Page Change Revision March 31, 2006[128 KB (18 pages)]Page Change Revision Includes: Page change initiated to include boilerplate language in Section 3.1 on pages 5 and 6. Makes changes to Tables 3-6, 3-7 and 3-8 on pages 9 and 10 as requested by NIOSH. No sections were deleted.
    • Page Change Revision July 8, 2005[125 KB (17 pages)]Page Change Revision Includes: Page change to correct organ dose estimates in Table 3-4 on page 7, in Section 3.
    • Revised September 9, 2004[123 KB (17 pages)]Revision Includes: Incorporates Office of General Counsel comments.
    • Approved May 28, 2004[126 KB (17 pages)]
  • Section 4: Occupational Environmental Dose
    • Page Change Revision March 13, 2009[2.9 MB (105 pages)]Page Change Revision Includes: Approved page change initiated to remove information pertaining to Monsanto Chemical Company, the subject of a class of employees added to the Special Exposure Cohort. The changes necessitated the reordering and renumbering of tables on the following pages: 9,10, 12 – 34 in Sections 4.2 and 4.3. NIOSH required language was revised on pages 7 and 8 in Section 4.1. Updated NIOSH reference on page 48. No sections were deleted. Incorporates formal internal and NIOSH review comments.
    • Approved October 6, 2004[3 MB (113 pages)]
  • Section 5: Occupational Internal Dose
    • Revised April 18, 2013[524 KB (60 pages)]Revision Includes: Incorporates SEC-00207, as well as comments made on the original version by Sanford Cohen & Associates in 2006. Incorporates formal internal and NIOSH review comments. Constitutes a total rewrite of the document.
    • Revised December 13, 2010[713 KB (67 pages)]Revision Includes: Incorporates SEC-00090 and SEC-00171. Revised dose reconstruction guidance for Ra-Ac-Th in Section 5.3.2.4, radon dose reconstruction guidance for Building SW-19 in Section 5.3.2.1, and updated Table 5-19. Incorporates formal internal and NIOSH review comments.
    • Page Change Revision March 13, 2009[691 KB (66 pages)]Page Change Revision: Approved page change initiated to remove dose reconstruction provisions applicable only to Monsanto Chemical Company. Some references to Monsanto Chemical Company necessarily remain, but dose reconstruction provisions retained are applicable only to the Mound Laboratory. These changes occurred on pages 9, 10, 11, 13, 14, 16 -19, 63 in Sections 5.1, 5.2, 5.3, and Attachment D, respectively. The year for the beginning time period changed from 1947 to 1948 in Table 5-4 on page 15 and in Table 5-20 on page 39. NIOSH required language was revised on page 7 in Section 5.1. References were updated on pages 42 and 45. Incorporates formal internal and NIOSH review comments. No sections were deleted.
    • Approved September 9, 2004[648 KB (65 pages)]
  • Technical Information Bulletin: Internal Dosimetry Coworker Data for the Mound Site
    • ORAUT-OTIB-0061 Rev-01: Revised February 17, 2011[479 KB (37 pages)]About this Document: Revision to change modeling of intakes of Type S plutonium to provide best-estimate intakes. Deleted previous underestimating intakes and instructions for dose reconstructors to perform case-specific intake modeling. Added 95th-percentile intake rates for all radionuclides. Constitutes a total rewrite or the document. Incorporates formal internal and NIOSH review comments.
    • ORAUT-OTIB-0061 Rev-00: Approved June 22, 2007[306 KB (30 pages)]About this Document: Assigns Mound internal doses based on coworker bioassay data. Incorporates formal internal and NIOSH review comments. There is no change to the assigned dose and no PER is required.

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