Iowa Ordnance Plant
(Site Profile/Docket Number 025)
Location: Burlington, Iowa
Also Known As: Burlington Ordnance Plant, Iowa Army Ammunition Plant, Mason & Hanger, Silas Mason Co.
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
To date, there are no open/active SEC petitions from Iowa Ordnance Plant.
Class(es) Added to the SEC
Iowa Ordnance Plan - Employees of the DOE or DOE contractors or subcontractors employed by the Iowa Ordnance Plant (Iowa Army Ammunition Plant), Line 1, during the period from March 1949 through 1974 who were employed for a number of work days aggregating at least 250 work days either solely under this employment or in combination with work days within the parameters (excluding aggregate work day requirements) established for other classes of employees included in the SEC
Note: This class was established by Petition 6.
Iowa Ordnance Plant (Radiographer) - Department of Energy (DOE) employees or DOE contractor or subcontractor employees who worked as radiographers from May 1948 to March 1949 in support of Line 1 operations at the Iowa Army Ammunition Plant and who were employed for a number of work days aggregating at least 250 work days, occurring under this employment in combination with work days of employment occurring within the parameters (excluding aggregate work day requirements) established for other classes of employees included in the SEC.
Note: This class was established by Petition 6.
Classes Not Added to the SEC
- Iowa Ordnance Plant - The time period 1946-April 1948 is prior to the introduction of any radioactive materials or radiological procedures at Line 1 of IOP. For this class, NIOSH determined that no feasibility determination is necessary because members of the class received no radiation doses as covered by EEOICPA
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.
Petition 6 (1947-1974)
|Steps in Petition Process:||Petition Details:|
June 15, 2004
Date Qualified for Evaluation
October 6, 2004
Summary of Information in Petition
Location: Burlington, Iowa--Line 1 (which includes Yard C, Yard G, Yard L, Firing Site Area, Burning Field "B", and Storage Sites for Pits and Weapons including Buildings 73 and 77)
Job Titles and/or Job Duties: All Technicians (Laboratory, Health Physics, Chemical, X-ray, etc.), Production Personnel (hourly and salaried), Engineers, Inspectors, Safety Personnel, Physical Security Personnel, and Maintenance Persons
Period of Employment: 1947-1974Note: The information above is what qualified for evaluation. During our evaluation of whether dose reconstructions can adequately be completed for the above job titles and period of employment, information may cause NIOSH to change some the dates or job titles/duties. Therefore, as this petition proceeds through the SEC petition process and if an SEC class is proposed, the proposed class may not exactly match the above information.
|Copy of the Petition Received||
NOTE: Petitions 1 through 4 listed above were merged into one petition.
|Federal Register Notice Announcing that a Winchester Engineering and Analytical Center SEC Petition has met the Minimum Qualifications for Review and Evaluation||October 25, 2004 [41 KB (1 page)]|
|SEC Petition Evaluation Report|
|Evaluation Report Sent to the Advisory Board||February 2, 2005|
|Petition Discussed by the Advisory Board||
The Advisory Board discussed the Iowa Ordnance Plant petition on February 9, 2005; April 26, 2005; and July 5, 2006. A copy of the transcripts from these Advisory Board meetings are listed below:
Note: the agenda for this meeting is available on the Advisory Board and Public Meetings page.
|Advisory Board Recommendation on SEC Petition|
|HHS Letters to Congress Regarding the SEC Petition|
|HHS Designation/Determination of Additional Members to the SEC||
|Federal Register Notice: Designation/Determination of a Class of Employees for Addition to the Special Exposure Cohort||
Note: A "designation" will be published if there is a recommendation to add a class to the SEC. A "determination" will be published if there is a recommendation not to add a class to the SEC.
|Effective Date for the SEC Class||
June 19, 2005--Iowa Ordnance Plant, Line 1, during the period from March 1949 through 1974
September 24, 2005--Radiographers from May 1948 to March 1949 in support of Line 1 operations at the Iowa Ordnance Plant
|Federal Register Notice: Final Effect of Designation of a Class of Employees for Addition to the Special Exposure Cohort||
March 1949 to 1974 [91 KB (2 pages)]
May 1948 to March 1949 (Radiographers) [100 KB (2 pages)]
|Letter to DOL Regarding the Addition of a New Class of Employees to the SEC|
|Letter from DOL Regarding the Return of All Cases for the New SEC Class|
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 Iowa Ordnance Plant:
No activities are scheduled at this time.
- July 29, 2004
Meeting with former workers
Final Minutes [111 KB (14 pages)]
- June 14, 2004
The minutes from the meeting have not been finalized.
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.
Technical Basis Documents
Revision Includes: Changes to the lumbar spine medical X-ray dose assignment guidance.
How to Submit Comments
Comments on Iowa Ordnance Plant Documents can be submitted to the NIOSH Docket Officer electronically by email at email@example.com 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.
- Final Draft: Review of NIOSH Site Profile for the Atomic Energy Operations at the Iowa Army Ammunition Plant (IAAP) [1 MB (93 pages)]
Contract No. 200-2004-03805
Task Order No. 1
- Comments from private individual [78 KB (1 page)]
- Technical Basis Document for Atomic Energy Operations at the Iowa Army Ammunition Plant (IAAP)
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.
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 [1.5 MB (58 pages)]
- Page last reviewed: September 28, 2015
- Page last updated: May 20, 2015
- Content source:
- National Institute for Occupational Safety and Health Division of Compensation Analysis and Support