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11 results returned

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• Talc in fire-resistant paint
• Talc mining and milling at Madoc, Ontario
• The mining and preparation of Tripoli
• Talc and soapstone
• The talc industry in 1920
• Bentonite
• Soapstone
• Feldspar mining and milling :near Keene, New Hampshire
• Silica
• Conditions in the feldspar industry
• Epsomite