"Butterfly" stope drills
Subtitle: type "BC"
By: Ingersoll-Rand Company
Publisher: Ingersoll-Rand Company
Published: 1915
Place of publication: New York
Language: eng
Number of pages: 16
Subjects: Catalogs; Rock-drills; Ingersoll-Rand Company
Notes: Caption title

"Form 4311"

Includes specifications