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National Institute for Occupational Safety and Health (NIOSH)
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NIOSH Program Area:

Radiation Dose Reconstruction


Iowa Ordnance Plant (IOP)
(Site Profile/Docket Number 025)

Location: Burlington, Iowa

Also known as: Burlington Ordnance Plant
                         Iowa Army Ammunition Plant
                         Mason & Hanger
                         Silas Mason Co.

Technical Basis Document

Technical Basis Document for Atomic Energy Operations at the Iowa Army Ammunition Plant (IAAP)
(Revised October 20, 2011)
this document in PDF PDF 469 KB (18 pages)

Revision Includes: Changes to the lumbar spine medical X-ray dose assignment guidance.

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Technical Information Bulletins (TIBs)

At the current time, there are no TIBs for IOP.

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Program Evaluation Reports (PERs) and Program Evaluation Plans (PEPs)

NIOSH is committed to applying the best available science in dose reconstructions. In keeping with this commitment, completed cases with probabilities of causation less than 50% are reviewed as relevant new information becomes available. The results of these reviews are described in a Program Evaluation Report (PER). The PER details the effect, if any, of the new information on the completed dose reconstruction. If it appears that the new information may result in an increase in dose for a completed dose reconstruction with a probability of causation of less than 50%, NIOSH is committed to working with the Department of Labor to reopen and rework the dose reconstruction, as appropriate. A Program Evaluation Plan (PEP) describes plans for evaluating specific program details or issues.

At the current time, no PERs or PEPs specific to IOP have been developed. However, we have developed PERs and PEPs that pertain to multiple sites. To view all PERs and PEPs that have been developed, please refer to the Program Evaluation Reports (PERs) and Program Evaluation Plans (PEPs) page.

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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.

Below are the Worker Outreach Activities for IOP:

  • July 29, 2004
    Meeting with former workers

    Final Minutes
    this document in PDF PDF 111 KB (14 pages)

  • June 14, 2004
    The minutes from the meeting have not been finalized.

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Comments on IOP Documents

How to Submit Comments
Comments on IOP documents can be submitted to the NIOSH Docket Officer electronically by e-mail at 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 (025) on all comments.

Comments Received

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Special Exposure Cohort Petition Information for IOP

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Previous Versions of IAAP Documents

  • Technical Basis Document for Atomic Energy Operations at the Iowa Army Ammunition Plant (IAAP)

    • Revised December 21, 2005
      this document in PDF PDF 449 KB (19 pages)

      Revision Includes: Significant changes based upon the feasibility determination by the Secretary of Health and Human Services. Incorporated comments received from the Office of General Counsel pertaining to reconstruction of medical X-ray procedures.

    • Revised March 14, 2005
      this document in PDF PDF 1.29 MB (79 pages)

      Revision Includes: Incorporated public comments and expanded time period for dose reconstructions to include early unmonitored workers. Changed document section order and formatting for conformance with typical site profiles. This was a major revision with significant changes throughout the document in methodology, assumptions based on new data, and other information. Incorporated comments from OCAS Associate Director for Science.

    • Approved April 16, 2004
      this document in PDF PDF 394 KB (58 pages)

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Page last updated: October 21, 2011
Page last reviewed: August 25, 2014
Content Source: National Institute for Occupational Safety and Health (NIOSH) Division of Compensation Analysis and Support