Bruce Mines trap rock
Subtitle: for roads, streets, concrete
Publisher: Bruce Mines Trap Rock Co.
Published: 1914
Place of publication: Bruce Mines, Ont
Language: eng
Number of pages: 16
Subjects: Aggregates (Building materials); Granulats
Notes: Cover title.

Originally issued by Martin International Trap Rock Co, which name is overstamped by Bruce Mines Trap Rock Co. throughout publication.