Roofing sand
Revision as of 07:14, 24 July 2013 by (username removed)
Description
Particles of crushed rock, slate, slag, shale, mica, or tile used as surfacing on asphalt roofing and shingles (Brady 1971).
Additional Information
G.S.Brady, Materials Handbook, 10th edition, McGraw-Hill, New York, 1971.