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				United Nuclear Corp.						Print
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			Special Exposure CohortAdvisory Board Work Group on Uranium Refining Atomic Weapons EmployersTechnical DocumentsAdvisory Board and NIOSH DiscussionsProgram Evaluation Plans and Reports (PEPs and PERs)Public CommentsDocument Archive
		
(Site Profile/Docket Number 170)
Location: Hematite, Missouri
Also known as: Mallinckrodt Chemical Works, Chemicals Div.
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 are currently no open/active petitions from United Nuclear Corp.

Classes Not Added to the SEC
All site employees who worked in any area of the United Nuclear Corporation— Hematite, Missouri, site from January 1, 1958, through December 31, 1973, and the residual period January 1, 1974, through July 31, 2006.
**Note:** This class was established from Petition 116
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 116 (Jan 1, 1958 to Jul 31, 2006)
	Petition 116
Steps in Petition Process:
Petition Details:Date Received
June 19, 2008Date Qualified for Evaluation
November 4, 2008Summary of Information in Petition
**Job Titles and/or Job Duties:** All site employees
**Period of Employment:** January 1, 1958 through December 31, 1969, and from January 1, 1970 through July 31, 2006 (residual radiation period)
**Note:** 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
June 19, 2008 [6 MB (96 pages)](January 1, 1958 through June 19, 2008)Federal Register Notice Announcing that a United Nuclear Corp. SEC Petition has met the Minimum Qualifications for Review and Evaluation
November 28, 2008 [42 KB (1 page)] (January 1, 1958 through July 31, 2006)SEC Petition Evaluation Report
August 17, 2009 [368 KB (81 pages)](January 1, 1958 through July 1, 2006)
Revised February 1, 2010 [479 KB (83 pages)](January 1, 1958 through July 1, 2006)Evaluation Report Sent to the Advisory Board
September 1, 2009(January 1, 1958 through July 1, 2006)
February 2, 2010 (Revision 1)(January 1, 1958 through July 1, 2006)Petition Discussed by the Advisory Board
The petition was discussed by the Advisory Board on February 10, 2010, during its regular meeting.
**Note:** Agendas and transcripts for Board meetings will be posted on the Advisory Board and Public Meetings page as soon as they become available.Advisory Board Recommendation on SEC Petition
October 31, 2012 [178 KB (1 page)](January 1, 1958 through July 1, 2006)HHS Letters to Congress Regarding the SEC Petition
December 7, 2012 [75 KB (10 pages)](January 1, 1958 through July 1, 2006)HHS Designation/Determination of Additional Members to the SEC
**Determination:**
December 7, 2012 [33 KB (5 pages)](January 1, 1958 through July 1, 2006)
**Note:** A “designation” means that HHS is recommending a class be added to the SEC. A “determination” means that HHS is recommending a class **not** be added to the SEC.Federal Register Notice: Designation/Determination Of a Class of Employees for Addition to the Special Exposure Cohort
**Determination:**
January 2, 2013 [50 KB (1 page)](January 1, 1958 through July 1, 2006)
**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
**Note:** This only applies if the class is added to the SEC.Federal Register Notice: Final Effect of Designation of a Class of Employees for Addition to the Special Exposure Cohort
**Note:** This only applies if the class is added to the SEC.Letter to DOL Regarding the Addition of a New Class of Employees to the SEC
**Note:** This only applies if the class is added to the SEC.
Advisory Board Work Group on Uranium Refining Atomic Weapons Employers (AWEs)–*formerly TBD 6001 Work Group*
This Work Group reviews technical documents and Special Exposure Cohort (SEC) petitions for uranium refining AWEs assigned to it by the Advisory Board on Radiation and Worker Health. The Work Group makes recommendations to the Board on SEC petitions, reviews reports developed by the Board’s contractor (SC&A), and assists NIOSH and SC&A in resolving issues that arise through the review process.
Sites currently being considered by the Work Group include: General Atomics, Hooker Electrochemical, Reduction Pilot Plant, Westinghouse Electric Corp. (New Jersey), and W.R. Grace (Erwin, TN).
Meeting information (including agendas and transcripts) for this Work Group can be found on either the individual work site pages or on the Advisory Board and Public Meetings page.
*Note: Baker-Perkins Co., Du Pont Deepwater Works, Electro Metallurgical Company,Nuclear Materials and Equipment Corp. (NUMEC) – Apollo, Nuclear Materials and Equipment Corp. (NUMEC) – Parks Township, and United Nuclear Corp. were previously discussed by this Work Group, but are not currently under discussion.*
**Work Group Members:**
Henry A. Anderson, M.D. (Chair)
David Kotelchuck, Ph.D., M.P.H., C.I.H.
David Pompa
**Meeting Information:**
July 19, 2016 Meeting of the Advisory Board’s Uranium Refining Atomic Weapons Employers (AWEs) Work GroupTime/Location:
9:00 a.m. (Eastern Time)
                Meeting Type: Face-to-Face; Public, No Comment Period
Cincinnati Airport Marriott
            2395 Progress Dr.
            Hebron, KY 41048
            Phone: 859-586-0166
            Toll-Free: 1-877-222-7570
            Fax: 859-586-0266
Teleconference: +1-866-659-0537
                Participant Code: 9933701
Available Meeting Items:
Agenda [75 KB (2 pages)]
Transcript [664 KB (207 pages)]Discussion/Background Papers:
SC&A Draft: Review of Special Exposure Cohort Evaluation Report for Westinghouse Electric Corp. SEC-00217, Rev. 0 [401 KB (20 pages)]
                July 30, 2015
SC&A Draft: SC&A Review of DCAS-TKBS-0009, Rev. 2 for Hooker Electrochemical Company [159 KB (11 pages)]
                June 28, 2016
NIOSH White Paper: NUMEC Issues and Feasibility of Coworker Model, Rev. 0 [748 KB (19 pages)]
                June 23, 2016
SC&A Memo: SC&A’s Review of NIOSH’s White Paper Addressing Issues on the Coworker Model for United Nuclear Corporation [79 KB (3 pages)]
                June 3, 2016
NIOSH/DCAS Memo: Response to SC&A’s Comments on SEC Evaluation Report for Westinghouse Electric Corp.SEC-00217 [225 KB (2 pages)
                May 24, 2016
SC&A Draft: SC&A Assessment of Selected NIOSH Responses to SC&A NUMEC Site Profile Findings [352 KB (14 pages)]
                August 14, 2015
SC&A Draft: Review of Special Exposure Cohort Evaluation Report for Westinghouse Electric Corp. SEC-00217, Rev. 0 [401 KB (20 pages)]
                July 30, 2015
**September 7, 2012–CHANGED TO A TELECONFERENCE**
        Teleconference Meeting of the Advisory Board’s Work Group on Uranium Refining Atomic Weapons Employers (AWEs)
Time/Location:
1:00 p.m. Eastern Standard Time (EST)
            Meeting Type: Teleconference; Public, No Comment Period
Teleconference: +1-866-659-0537
            Participant Code: 9933701
Pre-Decisional Document Policy
Available Meeting Items:
Agenda [110 KB (1 page)]
Transcript [395 KB (131 pages)]Discussion Paper:
SC&A Memo: Du Pont Deepwater Works Issues Matrix [208 KB (2 pages)]
                September 4, 2012
**February 14, 2012**
        Teleconference Meeting of the Advisory Board’s Work Group on Uranium Refining Atomic Weapons Employers (AWEs)
Time/Location:
2:00 p.m. Eastern Standard Time (EST)
            Meeting Type: Teleconference; Public, No Comment Period
Teleconference: +1-866-659-0537
            Participant Code: 9933701
Pre-Decisional Document Policy
Available Meeting Items:
Agenda [90 KB (1 page)]
Transcript [323 KB (73 pages)]
**November 21, 2011**
        Meeting of the Advisory Board’s Work Group on Uranium Refining Atomic Weapons Employers (AWEs)
Time/Location:
8:30 a.m. Eastern Standard Time (EST)
            Meeting Type: Face-to-Face; Public, No Comment Period
Cincinnati Airport Marriott
            2395 Progress Dr.
            Hebron, KY 41048
            Phone: (859) 586-0166
Teleconference: +1-866-659-0537
            Participant Code: 9933701
Pre-Decisional Document Policy
Available Meeting Items:
Agenda [17 KB (1 page)]
Transcript [442 KB (184 pages)]Discussion Papers:
NIOSH/DCAS: United Nuclear Corporation Air Concentration Data for 1961 and 1962 [79 KB (7 pages)]
                November 2011
Supplemental Graph Comparing Intakes Calculated from United Nuclear Air Data and Values Assigned Based on Bioassay for 1960-1963 [50 KB (1 page)]
NIOSH/DCAS White Paper: Representativeness and Applicability of United Nuclear Corporation Air Sampling for Reconstructing Thorium Intakes [390 KB (9 pages)]
                November 14, 2011
NIOSH/DCAS White Paper: SEC-00116 United Nuclear Corporation Petitioner Issues [92 KB (8 pages)]
                November 3, 2011
SC&A Draft: Review of the NIOSH Site Profile for Baker-Perkins, Saginaw, Michigan (DCAS-TKBS-0005) [159 KB (15 pages)]
                Contract No. 200-2009-28555
                SCA-TR-SP2011-0036, Revision 1
                November 2, 2011
SC&A Draft Memo: Use of Surrogate Air Sampling Data at Hooker Electrochemical Company: Comparison of DCAS and SC&A Approaches [83 KB (7 pages)]
                September 22, 2011
**August 16, 2011–MEETING TYPE CHANGED TO TELECONFERENCE**
        Teleconference Meeting of the Advisory Board’s Work Group on Uranium Refining Atomic Weapons Employers (AWEs) Work Group
Time/Location:
9:00 a.m. Eastern Standard Time (EST)
            Meeting Type: Teleconference; Public, No Comment Period
Cincinnati Airport Marriott
            2395 Progress Dr.
            Hebron, KY 41048
            Phone: (859) 586-0166
Teleconference: +1-866-659-0537
                Participant Code: 9933701
Pre-Decisional Document Policy
Available Meeting Items:
Agenda [15 KB (1 page)]
Transcript [164 KB (67 pages)]
**May 16, 2011**
        Meeting of the Advisory Board’s Work Group on TBD 6001
Time/Location:
9:00 a.m. Eastern Standard Time (EST)
            Meeting Type: Face-to-Face; Public, No Comment Period
Cincinnati Airport Marriott
            2395 Progress Dr.
            Hebron, KY 41048
            Phone: (859) 586-0166
Teleconference: +1-866-659-0537
            Participant Code: 9933701
Pre-Decisional Document Policy
Available Meeting Items:
Agenda [15 KB (1 page)]
Transcript [532 KB (253 pages)]
**March 15–POSTPONED**
        Meeting of the Advisory Board’s Work Group on TBD 6001
Time/Location:
9:00 a.m. Eastern Standard Time (EST)
            Meeting Type: Face-to-Face; Public, No Comment Period
Cincinnati Airport Marriott
            2395 Progress Dr.
            Hebron, KY 41048
Teleconference: +1-866-659-0537
            Participant Code: 9933701
Pre-Decisional Document Policy
No Available Meeting Items
**November 4, 2010**
        Meeting of the Advisory Board’s Work Group on TBD 6001
Time/Location:
9:00 a.m. Eastern Standard Time (EST)
            Meeting Type: Face-to-Face; Public, No Comment Period
Cincinnati Airport Marriott
            2395 Progress Dr.
            Hebron, KY 41048
            Phone: (859) 586-0166
Teleconference: +1-866-659-0537
            Participant Code: 9933701
Pre-Decisional Document Policy
Available Meeting Items:
Agenda [20 KB (1 page)]
Transcript [563 KB (271 pages)]
**July 7, 2010**
        Meeting of the Advisory Board’s Work Group on TBD 6001
Time/Location:
9:30 a.m. Eastern Standard Time (EST)
            Meeting Type: Face-to-Face; Public, No Comment Period
Cincinnati Airport Marriott
            2395 Progress Dr.
            Hebron, KY 41048
            Phone: (859) 586-0166
Teleconference: +1-866-659-0537
            Participant Code: 9933701
Pre-Decisional Document Policy
Available Meeting Items:
Agenda [25 KB (1 page)]
Transcript [745 KB (335 pages)]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.

Technical Basis Documents
Technical Basis Document for the United Nuclear Corporation, Hematite, Missouri [184 KB (15 pages)]
            March 21, 2011
**About this Document:** Changes Battelle-TBD-6001 Appendix to a standalone document. Change is primarily format only. Internal review comments incorporated.
Advisory Board and NIOSH Discussions on United Nuclear Corp.
The United Nuclear Corp. 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 has been cleared for distribution.
Advisory Board Presentation: Closeout of TBD Issues on the Internal Exposure Coworker Model for United Nuclear Corporation [203 KB (15 pages)]
        Presented at the August 9-10, 2016, Meeting of the Advisory Board on Radiation and Worker Health
SC&A Memo: SC&A’s Review of NIOSH’s White Paper Addressing Issues on the Coworker Model for United Nuclear Corporation [79 KB (3 pages)]
        June 3, 2016
Advisory Board Presentation: United Nuclear Corp. SEC Petition 116 [546 KB (29 pages)]
        September 19, 2012
NIOSH/DCAS: United Nuclear Corporation Air Concentration Data for 1961 and 1962 [79 KB (7 pages)]
        November 2011
Supplemental Graph Comparing Intakes Calculated from United Nuclear Air Data and Values Assigned Based on Bioassay for 1960-1963 [50 KB (1 page)]
NIOSH/DCAS White Paper: Representativeness and Applicability of United Nuclear Corporation Air Sampling for Reconstructing Thorium Intakes [390 KB (9 pages)]
        November 14, 2011
NIOSH/DCAS White Paper: SEC-00116 United Nuclear Corporation Petitioner Issues [92 KB (8 pages)]
        November 3, 2011
Draft: A Focused Review of the SEC Petition and NIOSH Evaluation Report for United Nuclear Corporation, Petition SEC-00116 [183 KB (37 pages)]
        Contract No. 200-2009-28555
        SCA-TR-SEC2010-0017
        September 2010Program Evaluation Plans (PEPs) and Program Evaluation Reports (PERs)
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.
DCAS-PER-082, Rev. 0: United Nuclear Corp. TBD Revision Program Evaluation Report [107 KB (2 pages)]
            January 8, 2018
**About this Document:** Determines the effect of revision to DCAS-TKBS-0008 (United Nuclear Corporation TBD) on previously completed claims.
**Summary:** One claim resulted in a POC greater than 52%. NIOSH will provide the Department of Labor with the list of all the claims evaluated under this PER. Further, NIOSH will request the return of the 1 claim that would now result in a probability of causation greater than 50%.Public Comments on United Nuclear Corp. Documents
How to Submit Comments
Comments on United Nuclear Corp. 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 (170) on all comments.
Comments Received
No public comments have been received at this time.
Document Archive for United Nuclear Corp.
Site Profile for Atomic Weapons Employers that Refined Uranium and Thorium [3.5 MB (75 pages)]
            December 13, 2006
**About this Document:** This technical basis is established for the reconstruction of radiation doses of workers at AWE sites which refined uranium under contract to the United States government from 1942 to 1958. This document covers the generic aspects of uranium refining and the data are useful where no other dosimetry data exist. Site specific appendices are included that provide information that apply to only the identified site (Appendix D is the site specific Appendix for United Nuclear Corp.).
Appendix D – United Nuclear Corp.
Revised April 30, 2010 [89 KB (12 pages)]
Approved March 13, 2008 [60 KB (7 pages)]
Special Exposure Cohort Petition Evaluation Report for United Nuclear Corp. [368 KB (81 pages)]
        August 17, 2009
							
					
							Last Reviewed:  June 30, 2022						Source: 	National Institute for Occupational Safety and Health
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