Standard for and risks associated with man-made mineral fiber (MMMF).

Archive Notice - OSHA Archive

NOTICE: This is an OSHA Archive Document, and may no longer represent OSHA Policy. It is presented here as historical content, for research and review purposes only.

OSHA requirements are set by statute, standards and regulations. Our interpretation letters explain these requirements and how they apply to particular circumstances, but they cannot create additional employer obligations. This letter constitutes OSHA's interpretation of the requirements discussed. Note that our enforcement guidance may be affected by changes to OSHA rules. Also, from time to time we update our guidance in response to new information. To keep apprised of such developments, you can consult OSHA's website at https://www.osha.gov.

Aug 2, 1985

J. Bognar, Manager
Environmental Technology
N.Z. Forest Products Limited
Private Bag, Auckland
1 New Zealand

Dear Mr. Bognar:

Thank you for your letter of July 12, to former Assistant Secretary Robert Rowland, concerning the occupational exposure standard on man-made mineral fiber (MMMF). Your letter has been referred to this office for response.

Following are answers to your seven questions:

1. What is the current TLV for MMMF in your country?

Petroleum asphalt removed from coverage under the Coal Tar Pitch Volatiles Standard

OSHA requirements are set by statute, standards and regulations. Our interpretation letters explain these requirements and how they apply to particular circumstances, but they cannot create additional employer obligations. This letter constitutes OSHA's interpretation of the requirements discussed. Note that our enforcement guidance may be affected by changes to OSHA rules. Also, from time to time we update our guidance in response to new information. To keep apprised of such developments, you can consult OSHA's website at https://www.osha.gov.

(Letter undated)

Mr. Robert A. Georgine
President, Building and Construction
Trades Department
AFL-CIO
815 Sixteenth Street, N.W.
Suite 603
Washington, D.C. 20006

Dear Mr. Georgine:

This is in response to your letter dated April 8, 1983 in which you ask that the Occupational Safety and Health Administration (OSHA) undertake rulemaking to develop a new standard for petroleum asphalt.

Status and applicability of Thiram standards in Washington and Oregon.

OSHA requirements are set by statute, standards and regulations. Our interpretation letters explain these requirements and how they apply to particular circumstances, but they cannot create additional employer obligations. This letter constitutes OSHA's interpretation of the requirements discussed. Note that our enforcement guidance may be affected by changes to OSHA rules. Also, from time to time we update our guidance in response to new information. To keep apprised of such developments, you can consult OSHA's website at https://www.osha.gov.

January 24, 1983

Clarification of minimum face velocity requirements for spray booths

OSHA requirements are set by statute, standards and regulations. Our interpretation letters explain these requirements and how they apply to particular circumstances, but they cannot create additional employer obligations. This letter constitutes OSHA's interpretation of the requirements discussed. Note that our enforcement guidance may be affected by changes to OSHA rules. Also, from time to time we update our guidance in response to new information. To keep apprised of such developments, you can consult OSHA's website at https://www.osha.gov.

October 22, 2001

Wade R. Abnett, ASP
Senior Safety Engineer
Middle River Aircraft Systems
103 Chesapeake Park Plaza
Baltimore, Maryland 21220

Dear Mr. Abnett:

Applicable OSHA standards and safety considerations for microwave device use in a laboratory

OSHA requirements are set by statute, standards and regulations. Our interpretation letters explain these requirements and how they apply to particular circumstances, but they cannot create additional employer obligations. This letter constitutes OSHA's interpretation of the requirements discussed. Note that our enforcement guidance may be affected by changes to OSHA rules. Also, from time to time we update our guidance in response to new information. To keep apprised of such developments, you can consult OSHA's website at https://www.osha.gov.

August 8, 2002

Gary Login, D.M.D., D.M.Sc.
Assistant Professor of Oral Pathology
Harvard School of Dental Medicine
209 Harvard Street, Suite 402
Brookline, MA 02446

Dear Dr. Login:

Hierarchy of controls for exposure to air contaminants

OSHA requirements are set by statute, standards and regulations. Our interpretation letters explain these requirements and how they apply to particular circumstances, but they cannot create additional employer obligations. This letter constitutes OSHA's interpretation of the requirements discussed. Note that our enforcement guidance may be affected by changes to OSHA rules. Also, from time to time we update our guidance in response to new information. To keep apprised of such developments, you can consult OSHA's website at https://www.osha.gov.

 

 

Allowable Airborne Concentrations of Mercury

OSHA requirements are set by statute, standards and regulations. Our interpretation letters explain these requirements and how they apply to particular circumstances, but they cannot create additional employer obligations. This letter constitutes OSHA's interpretation of the requirements discussed. Note that our enforcement guidance may be affected by changes to OSHA rules. Also, from time to time we update our guidance in response to new information. To keep apprised of such developments, you can consult OSHA's website at https://www.osha.gov.

June 30, 1976

8-hour total weight average (TWA) permissible exposure limit (PEL).

OSHA requirements are set by statute, standards and regulations. Our interpretation letters explain these requirements and how they apply to particular circumstances, but they cannot create additional employer obligations. This letter constitutes OSHA's interpretation of the requirements discussed. Note that our enforcement guidance may be affected by changes to OSHA rules. Also, from time to time we update our guidance in response to new information. To keep apprised of such developments, you can consult OSHA's website at https://www.osha.gov.

October 6, 1995

Mr. Mark Nicas
University of California
Environmental Health Sciences
School of Public Health
140 Warren Hall
Berkeley, California 94720-7360

Dear Mr. Nicas:

This is in response to your letter of July 7, addressed to Mr. Joseph A. Dear, Assistant Secretary for the Occupational Safety and Health Administration (OSHA), requesting an interpretation on 8-hour total weight average (TWA) permissible exposure limit (PEL) as defined in 29 CFR 1910.1000 and in other substance-specific health standards.

Employer's responsibility to protect employees from workplace hazards through appropriate hazard control methods

OSHA requirements are set by statute, standards and regulations. Our interpretation letters explain these requirements and how they apply to particular circumstances, but they cannot create additional employer obligations. This letter constitutes OSHA's interpretation of the requirements discussed. Note that our enforcement guidance may be affected by changes to OSHA rules. Also, from time to time we update our guidance in response to new information. To keep apprised of such developments, you can consult OSHA's website at https://www.osha.gov.

June 5, 2003

Mr. Garland Latham
Managing Director
ThawTec Inc.
2468 Cortland Ave.
Grand Junction, CO 81506

Dear Mr. Latham:

Reiteration of Existing OSHA Policy on Indoor Air Quality: Office Temperature/Humidity and Environmental Tobacco Smoke

OSHA requirements are set by statute, standards and regulations. Our interpretation letters explain these requirements and how they apply to particular circumstances, but they cannot create additional employer obligations. This letter constitutes OSHA's interpretation of the requirements discussed. Note that our enforcement guidance may be affected by changes to OSHA rules. Also, from time to time we update our guidance in response to new information. To keep apprised of such developments, you can consult OSHA's website at https://www.osha.gov.

February 24, 2003