Document X7BZ4gQ8eVgpym0vE1k9vvvRd

FILE NAME: US Gypsum (USG) DATE: August 24, 1943 DOC#: USG047 DOCUMENT DESCRIPTION: 1943 general order regarding elimination of dusty conditions. Replaces page 1 of 4/1/43. Page 2 is from 4/1/43 order. ' c c Operating Division GENERAL ORDER Vice Pres.-Operations ELIMINATION OF DUSTY CONDITIONS No. 2-5 Date 3-24-43 Page 1 of 2 Cancels Page 1 Dated 4-1-43 Laws and regulations Plant Managers shall be familiar with state and local regulations concerning ventila tion and dust elimination, and shall promptly notify their Production Manager of any violations, outlining the changes in equipment or methods necessary for full com pliance. here elimination of dust is impossible under existing conditions, authority re- quests for dust collecting equipment shall be prepared and submitted to Production Manager, REQUIRED PRECAUTIONS . Plant Managers are responsible for seeing that the following precautions are taken to eliminate extremely dusty conditions and should endeavor to avoid employing in dividuals previously exposed to hazardous dust concentrations; Good ventilation shall be maintained in all working areas and cleanup 7/ork handled in a manner which will not greatly increase dust concentration. Dust collecting equipment shall be regularly inspected and maintained, fol lowing instructions issued by the manufacturer. Bates packers shall be kept tight and if necessary to avoid excessive dust, shall be equipped with hood and collector. Conveying, elevating and mixing equipment shall be so maintained that they are not sources of excessive dust. Men exposed to high concentrations of dust on infrequent jobs such as mixer clean-out, screening retarder, shaking out bags, sweeping or cleaning under very dusty conditions, etc., shall be required so wear respirators. Buhr stone dressing operations shall be provided with equipment for remov- . ing the dust at the point of operation. The collector shall be a Ruemelin or equivalent type, which provides suction at the dressing tool and removes the dust from the surface of the stone. The dust drawn into the collector must be discharged into an arrestor. Workmen engaged in dressing buhr stones ari required to wear goggles and respirators. It is recommended that before any applicant for employment is hired, the history of his previous employment be fully developed. If there is a questionaole history of exposure to asbestos or silica dust, or an indicated partial lung disability such as tuberculosis, the applicant should not be employed until satisfactorily passing a medical examination. Such a medical examination shall include the taking of cheat X-Rays and their interpretation by Saranac Laboratories as set forth in Bul letin 4-5. It is further recommended that the occupational history of'all applicants for em ployment be fully* recorded on Employment Data and Application card, Form 1614 5/43 Rev., and this card become a part of the permanent employment record of all c-pplicants hired. Th procedure recommended in this and the preceding pararrach s.a definite requirement as the Eas; Chicago shingle plant, and at Cakfield. Indicates change. PCP. EX. MO. it J* . -A ' * RE5FIPATCRS _ ' - ELIMINATION OF DUSTY CONDITIONS 4 - No. 2-5 Date 4-1-43 Pace 2 of 2 New Bulletin With the exception of lime plants, where the Msrtindale Protective Mask is satisfactory, only respirators approved by the Bureau of Mines may be pur chased and used for protection against dust. ' ' The following respirators have received the Bureau of Mines' approval for non-poisonous dust, but must not be used for protection against poisonous gases, or where the hazard is lack of oxygen: . . . . . . : M.5.A. EXistfoe M.S.A. Comfo American Optical #R-1000 American Optical //R-9100 Willson #200 Willson #750 Chicago Eye Shield #94 Care of Respirators - Respirators shall not be interchanged between employees and shall be sterilized regularly by one of tho follov7ing methods and before reissue to another employee: a. Wash rubber and metal parts with soap, brush, and warm water and steril ize by immersion for 10 minutes in a solution of formaldehyde (one part of 40 per cent formaldehyde solution and 9 parts of water.) * b. Wash rubber and metal parts with soap and water, and sterilize in a 3 per cent solution of carbolic acid, a 2 per cent solution of lysol, or a 70 per cent solution of denatured alcohol. c. Subject respirator to sterilization in a moist atmosphere of antiseptic gas, preferably foimaldehyde, for a period of 10 minutes at room temoera- ture. * After sterilization respirators should be rinsed in water and dried. Filter, felt screens and lastic head bands shall always be removed before steriliza tion. ' `