Designing Blast Patterns Using Empirical Formulas
201442&ensp·&enspDesigning blast patterns using empirical formulas: a com parison of calculated patterns with plans used in quarrying limestone and dolomite, with geologic considerations. [Washington] U.S. Dept. of the Interior, Bureau of Mines (1972] 33 p. illus., tables. (U.S. Bureau of Mines, Information circular 8550) Includes bibliography. 1.