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mineral information service - State of California

Marcoe Island in the Gulf of California; raw gypsum and gypsum products .... Gypsum from. Bristol Lake supplied a large plaster mill at Amboy ... stones,as a network of satin spar veins, or as thin layers of .... stucco is re- ground in buhr mills.

Millstone - Wikipedia

Millstones or mill stones are stones used in gristmills, for grinding wheat or other grains. ... but built up from sections of quartz, cemented together with plaster, and bound with iron bands. French Burr comes from the Marne Valley in northern France.

Iron Work Farm - Mill Corner History

By the late 18th century the mill stones for grinding flour (French buhr stones) were ... The mill building was converted to a Plaster Mill, where blocks of gypsum...

Grist Mills - A WebsiteBuilder Website - Tide Mill Institute

The US government's HABS efforts produced a few drawings of mills including the Leffert's Tide Mill. ... A millstone could be either a runner (top) or bed (bottom) stone; used in pairs to ... French buhr stone made up of blocks. Pieces are cemented together with plaster of Paris and the whole bound around with iron hoops.

French Burr and Millstones - North Worcestershire Archaeology Group

Jan 15, 2012 ... A non-commercial, volunteer-based archaeology fieldwork unit. One of very few organisations that offers hands-on archaeology and training to...

table of contents. - State of Michigan

TECHNOLOGY OF GYPSUM AND THE GYPSUM PLASTERS. 60. 1. General Process of ...... Buhr Stone Mills Grinding Gypsum; Grand Rapids. Plaster Co.