Johns-Manville Chrysotile Asbestos Fiber Safety Data Sheets and Fiber Grade Data Sheets (1975–1978)

Nineteen pages of Johns-Manville's printed sheets for the chrysotile fiber sold by its Asbestos Fiber Sales office in Denver and Canadian Johns-Manville's Asbestos Fiber Division in Asbestos, Quebec. The first two are editions of the "Chrysotile Asbestos Fiber Material Safety Data Sheet," coded AF-91 11-78 and AF-91 4-75, which list the fiber as approximately 100% chrysotile and give the OSHA limit of two fibers per cubic centimeter effective July 1, 1976. The other seventeen are fiber data sheets, many marked "File Copy" with a handwritten 1976 date, for grades 7D, 6D, 5R, 5K, 4T, 4K, 3T, 7F, 7M, 7K, 7H, 7T, 7R, 7TF, 7RF, Chlorbestos and Paperbestos, each giving the Quebec Standard Test, screen analyses, surface area and other test results.

What it shows

Under health hazards, the safety data sheets refer readers to the OSHA standard and give as first aid only "Avoid breathing excessive dust when handling, dumping and mixing. See caution label on bag." The 1978 edition quotes that label: "Contains Asbestos Fibers—Avoid Creating Dust—Breathing Asbestos Dust May Cause Serious Bodily Harm." Every fiber data sheet carries the same caution in a box beside the test figures. No sheet names a disease. The grades are those of the Quebec Standard Test; see also Chrysotile and Canadian Johns-Manville.

About this copy

The 1975 safety data sheet (page 2) is also in the Library as J-M's Material Safety Data Sheet for Asbestos Fiber. The fiber data sheets are undated in print; the handwritten "File Copy" dates in the margins read 1976.