H. Hartman

SME mining engineering handbook

H. Hartman, 1992 .

STRESS DISTRIBUTION BENEATH A WEDGE-SHAPED DRILL-BIT LOADED STATICALLY

H. Hartman, S. Tandanand, 1962 .

Mine ventilation and air conditioning

Howard L. Hartman, H. Hartman, 1961 .

Introductory Mining Engineering

Howard L. Hartman, H. Hartman, 1987 .