This work was designed for students preparing for the Examinations for Colliery Managers' Certificates and as such is valuable as a book of reference for all those with an interest in mining. Contents Include: Preliminary; G.C.M. and L.C.M.; Vulgar Fractions; Decimal Fractions; Tables, etc.; Reduction; Miscellaneous; Practice; Proportion; Averages; Percentages; Involution and Evolution; Algebra - Preliminary; Addition; Subtraction; Multiplication;...
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