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				Hooker Electrochemical						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 193)
Location: Niagara Falls, New York
Also Known As: Hooker Chemical Co., Occidental Chemical Corp., Occidental Chemical Corp., Specialty Chemical Div., Hooker Chemical and Plastics Corp.
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
To date, there are no open/active SEC petitions from Hooker Electrochemical.
Class(es) Added to the SEC
All Atomic Weapons Employees who worked at the Hooker Electrochemical Corporation in Niagara Falls, New York, during the operational period from July 1, 1944, through December 31, 1948, 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 Cohort.
**Note:** This class was established from Petition 141Classes Not Added to the SEC
All employees who worked at any location at the Hooker Electrochemical Corporation during the operational period from January 1, 1943 through June 30, 1944, and during the residual period from January 1, 1949 to December 31, 1976.
**Note:** This class was established from Petition 141Petitions 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 141 (Aug 14, 1942 to Nov 30, 1949)
	Petition 141
Steps in Petition Process:
Petition Details:Date Received
March 6, 2009Date Qualified for Evaluation
October 16, 2009Summary of Information in Petition
**Job Titles and/or Job Duties:** All employees who worked in any location
**Period of Employment:** January 1, 1943 to December 31, 1948, and from January 1, 1949 to December 31, 1976
**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
May 3, 2010 [570 KB (9 pages)](January 1, 1943 to December 31, 1976)Federal Register Notice Announcing that a Hooker Electrochemical SEC Petition has met the Minimum Qualifications for Review and Evaluation
October 30, 2009 [40 KB (1 page)] (January 1, 1943 to December 31, 1948, and from January 1, 1949 to December 31, 1976)SEC Petition Evaluation Report
May 3, 2010 [274 KB (51 pages)] (January 1, 1943 through December 31, 1948, and during the residual period from January 1, 1949 to December 31, 1976)Evaluation Report Sent to the Advisory Board
May 4, 2010 (January 1, 1943 through December 31, 1948, and during the residual period from January 1, 1949 to December 31, 1976)Petition Discussed by the Advisory Board
The Advisory Board discussed the petition on May 19, 2010, and August 24, 2011, during its regular meetings.
**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
December 29, 2011 [24 KB (2 pages)] (January 1, 1943 through December 31, 1948, and during the residual period from January 1, 1949 to December 31, 1976)HHS Letters to Congress Regarding the SEC Petition
February 2, 2012 [57 KB (9 pages)] (January 1, 1943 through December 31, 1948, and during the residual period from January 1, 1949 to December 31, 1976)HHS Designation/Determination of Additional Members to the SEC
**Determination:**
February 2, 2012 [25 KB (4 pages)] (January 1, 1943 through December 31, 1948, and during the residual period from January 1, 1949 to December 31, 1976)
**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:**
February 16, 2012 [49 KB (1 page)](January 1, 1943 through December 31, 1948, and during the residual period from January 1, 1949 to December 31, 1976)
**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.HHS Administrative Review Documents
September 22, 2015 [4 MB (61 pages)](January 1, 1943 through December 31, 1948, and during the residual period from January 1, 1949 to December 31, 1976)HHS Letters to Congress Regarding the SEC Petition
September 22, 2015 [118 KB (21 pages)] (July 1, 1944 through December 31, 1948)HHS Designation/Determination of Additional Members to the SEC
**Designation:**
September 22, 2015 [57 KB (5 pages)] (July 1, 1944 through December 31, 1948)
**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 Concerning a Petition to Add a Class of Employees to the Special Exposure Cohort
**Designation:**
October 9, 2015 [129 KB (1 page)] (July 1, 1944 through December 31, 1948)
**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
October 22, 2015 (July 1, 1944 through December 31, 1948)
**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
October 30, 2015 [110 KB (1 page)] (July 1, 1944 through December 31, 1948)
**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
October 22, 2015 [61 KB (1 page)] (July 1, 1944 through December 31, 1948)
**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:
January 13, 2017 Teleconference of the Advisory Board’s Uranium Refining Atomic Weapons Employers (AWEs) Work GroupTime/Location:
10:00 a.m. (Eastern Time)
                Meeting Type: Teleconference; No Public Comment Period
Teleconference: +1-866-659-0537
                Participant Code: 9933701
Pre-Decisional Document Policy
Available Meeting Items:
Agenda [23 KB (1 page)]
Transcript [251 KB (29 pages)]Discussion/Background Papers:
SC&A Memo: SC&A Review of NIOSH Response Paper, NIOSH Response to Sanford Cohen & Associates Review of Hooker Electrochemical Company TBD (DCAS-TKBS-0009 Rev. 3)[34 KB (2 pages)]
                        December 23, 2016
NIOSH/DCAS: NIOSH Response to Sanford Cohen & Associates Review of Hooker Electrochemical Company TBD (DCAS-TKBS-0009 Rev. 3) Response Paper [322 KB (4 pages)]
                        December 6, 2016
SC&A Draft: SC&A Review of DCAS-TKBS-0009, Revision 03, for Hooker Electrochemical Company, Rev. 0 [110 KB (12 pages)]
                        November 21, 2016
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
Pre-Decisional Document Policy
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
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 [91 KB (1 page)]
Transcript [327 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
                (859) 586-0166
Teleconference: +1-866-659-0537
                Participant Code: 9933701
Pre-Decisional Document Policy
Available Meeting Items:
Agenda [17 KB (1 page)]
Transcript [443 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) [255 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
                (859) 586-0166
Teleconference: +1-866-659-0537
                Participant Code: 9933701
Pre-Decisional Document Policy
Available Meeting Items:
Agenda [15 KB (1 page)]
Transcript [144 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
                (859) 586-0166
Teleconference: +1-866-659-0537
                Participant Code: 9933701
Pre-Decisional Document Policy
Available Meeting Items:
Agenda [15 KB (1 page)]
Transcript [528 KB (253 pages)]
**March 15, 2011**–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 [558 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 [741 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 Hooker Electrochemical Company [533 KB (23 pages)]
            Revised September 13, 2016
**Revision includes:** Includes discussion about ingestion intakes. Revises Table 4 to correct units. Revises Table 5 to correct values in the third column. Corrects photon exposures in Table 7. Makes various editorial changes to text.
Advisory Board and NIOSH Discussions on Hooker Electrochemical
The Hooker Electrochemical 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.
SC&A Presentation: Summary of Five Approved Document Reviews by the Subcommittee for Procedure Reviews [253 KB (18 pages)]
            Presentation at the December 8-9, 2021, Teleconference Meeting of the Advisory Board on Radiation and Worker Health
SC&A Memo: SC&A Review of NIOSH Response Paper, NIOSH Response to Sanford Cohen & Associates Review of Hooker Electrochemical Company TBD (DCAS-TKBS-0009 Rev. 3)[34 KB (2 pages)]
            December 23, 2016
NIOSH/DCAS: NIOSH Response to Sanford Cohen & Associates Review of Hooker Electrochemical Company TBD (DCAS-TKBS-0009 Rev. 3) Response Paper [322 KB (4 pages)]
            December 6, 2016
SC&A Draft: SC&A Review of DCAS-TKBS-0009, Revision 03, for Hooker Electrochemical Company, Rev. 0 [110 KB (12 pages)]
            Contract No. 211-2014-58081
            November 21, 2016
Advisory Board Presentation: Review of Site Profile for Hooker Electrochemical Company [329 KB (14 pages)]
            Presentation at the November 30, 2016, Meeting of the Advisory Board on Radiation and Worker Health
SC&A Draft: DCAS-PER-038, Subtask 4 – Review of Three Advisory Board-Selected Cases Reassessed for the Hooker Electrochemical Company TBD Revisions, Rev. 0 [565 KB (25 pages)]
            Contract No. 211-2014-58081
            October 16, 2014
SC&A: Review of NIOSH’S Program Evaluation Report DCAS-PER-038, “Hooker Electrochemical TBD Revision” (SC&A Report Dated May 2013) [353 KB (7 pages)]
            Presentation from the November 7, 2013, Teleconference Meeting of the Advisory Board’s Subcommittee for Procedures Review
SC&A Draft: A Review of NIOSH’s Program Evaluation Report DCAS-PER-038, “Hooker Electrochemical TBD Revision” [247 KB (16 pages)]
            Contract No. 200-2009-28555
            SCA-TR-PR2013-0038, Rev. 0
            May 20, 2013
SC&A Draft: Review of the NIOSH Technical Basis Document for the Hooker Electrochemical Company (DCAS-TKBS-0009) [272 KB (33 pages)]
            Contract No. 200-2009-28555
            SCA-TR-SP2013-0034, Rev. 0
            March 28, 2013
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
SC&A Draft: A Focused Review of the Hooker Electrochemical Company Petition Evaluation Report for SEC-00141 [190 KB (33 pages)]
            SCA-SEC-2011-0018, Revision 0
            January 2011
SC&A Draft: Review of the NIOSH Site Profile for the Hooker Electrochemical Company (Battelle-TBD-6001, Appendix AA) [148 KB (28 pages)]
            Contract No. 200-2009-28555
            SCA-TR-SP2010-0034
            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-081: Hooker Electrochemical [223 KB (3 pages)]
            October 17, 2017
**About this Document:** New document to determine the effect of revision 3 to DCAS-TKBS-0009 (Hooker Electrochemical TBD) on previously completed claims.
**Summary:** Two claims resulted in a POC greater than 52%. One of these claims appears to qualify for inclusion in the SEC at another site but may need a new dose reconstruction to qualify for some medical benefits. The Department of Labor will be notified of these details and they will determine if a new dose reconstruction is necessary. 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 2 claims that would now result in a probability of causation greater than 50%.
DCAS-PER-038 Rev-0: Program Evaluation Report: Hooker Electrochemical TBD Revisions [177 KB (5 pages)]
                July 24, 2012
**About this Document:** site specific appendix to Battelle-TBD-6001 (Appendix AA) was issued 6/15/2007. This was superseded by a stand-alone Technical Basis Document (TBD) on 4/4/2011 (DCAS-TKBS-0009 rev. 0). On 6/16/2011, revision 1 was issued to that document to correct an error. The changes made in revision 1 of the TBD caused external doses to operators to decrease during the operational period. No increase in any doses occurred in revision 1. Revision 0 however, did result in some increased dose when compared to Appendix AA. Therefore, Appendix AA is compared to Revision 1 in this PER in order to itemize the increased dose.
**Summary:** As a result of this review, the revisions to the Hooker Electrochemical TBD did not result in the probability of causation of any previously completed claims rising to greater than 50%. A listing of those claims evaluated and their final disposition will be forwarded to the Department of Labor.Public Comments on Hooker Electrochemical Documents
How to Submit Comments
Comments on Hooker Electrochemical 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 (193) on all comments.
Comments Received
Transcript of Address by Mary R. Girardo on Behalf of the Hooker Electrochemical Petitioners (SEC-00141) [26 KB (4 pages)]
            December 9, 2011
Response to Work Group Denial of SEC Petition for All Workers in all Locations of Hooker Electrochemical (NIOSH SEC Petition Evaluation Report SEC-00141) [25 KB (3 pages)]
            August 24, 2011
Draft: A Focused Review of the Hooker Electrochemical Company Petition Evaluation Report for SEC-00141 [190 KB (33 pages)]
            SCA-SEC-2011-0018, Revision 0
            January 2011
Draft: Review of the NIOSH Site Profile for the Hooker Electrochemical Company (Battelle-TBD-6001, Appendix AA) [148 KB (28 pages)]
            Contract No. 200-2009-28555
            SCA-TR-SP2010-0034
            September 2010Document Archive for Hooker Electrochemical
**Technical Basis Document for the Hooker Electrochemical Company**
Revised December 8, 2015 [367 KB (23 pages)]
**About this Document:** Includes information about a Special Exposure Cohort designation for Hooker. Incorporates changes due to new information describing the operations at Hooker.
June 17, 2011 [194 KB (16 pages)]
**About this Document:** Corrected errors in Tables 2, 3, and 6. Renumbered tables after Table 4. Added language on page 10 to indicate the 95th percentile of the airborne values was used. Corrected typographical error on page 7 and 14.
April 4, 2011 [194 KB (16 pages)]
**About this Document:** Changes Battelle-TBD-6001 Appendix to a standalone document. Revises dose models to eliminate dependence on Battelle-TBD-6001. Provides more detailed description of dose models. Incorporates review comments.
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 AA — Hooker Electrochemical [71 KB (10 pages)]
                        June 15, 2007
							
					
							Last Reviewed:  June 30, 2022						Source: 	National Institute for Occupational Safety and Health
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