Geological Survey of Michigan

Alabaster Alabastine alumina alumina oxides amount analyses anhydrite Au Gres river basin beds of gypsum borings bottom briquettes buhr calcined calcined plaster Cement Plaster cent channel City Clair River clay coal delta drift east East Tawas feet thick flues foot formation formed Geol Geological Survey Grand Rapids Grand Rapids group Grand Rapids Plaster Grandville gravel gypsum deposits gypsum earth gypsum plasters gypsum rock heat Huron county inches insoluble material Iron and alumina Kansas kettle kiln Lake Huron land plaster layers ledge Lime carbonate Lime sulphate limestone lower manufacture miles mill mixed mixture moulds outcrop plant plaster of Paris Plate pounds Report retarder Saginaw salt sand sandstone shale shore shows Silica Silica and insoluble soil solution stone sulphate of lime sulphuric acid surface Survey of Michigan Tawas Tawas City tensile strength tests tons upper wall plaster