Corporate Author Hercules Powder Company.

Title Rock tunnel methods. Drilling, blasting, excavating, ventilation, transportation & lining.

Imprint Wilmington, Del. [c1931]
Location Call Number Status
 Folio  TF230 .H47 1931  AVAILABLE
Description 94 p. illus., maps, plans, diagrs. 31 cm.
Note "Reprinted from The explosives engineer."
Subject(s) Tunneling.