Introduction -- Asbestos minerals -- Chrysotile -- Amphibole -- Uses of asbestos -- Origin of chrysotile asbestos -- Asbestos occurrences in Oregon -- Southwestern Oregon -- C-1 Foster Asbestos (Bear placer) -- A-1 L.E.J. Asbestos -- A-2 Liberty Asbestos -- A-3 Raspberry Creek tremolite -- Northeastern Oregon -- C-2 Mount Vernon deposit -- C-3 Spare Time claims -- C-4 Big Butte Creek asbestos -- C-5 Rock Creek Butte occurrence -- C-6 Towell claims -- C-7 Bear Valley occurrence -- A-4 Pine Creek amphibole asbestos -- Prospecting and development -- Grading and processing the ore -- References