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BS 6237 1982 Edition, February 26, 1982
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Method for Grading and Visual Classification of Muscovite Mica Splittings
Additional Comments: W/D NO S/S * SAME AS ISO 6386
Page Count:10
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Establishes a size classification by standard commercial grades and specifies the maximum allowable physical defects for each grade. Applicable irrespective of the basic colour or source of the mica.