Title: Pit slope manual, supplement 2-4
Description: ABSTRACT: The article explains the essence of photogrammetry. It provides insight into the errors, limitations and design of photogrammetry systems.  Helen Mine in northern Ontario and Brenda and Endako mines in British Columbia are highlighted in case histories.
Subjects: Photogrammetry, Photogrammetry in geology
Places: Brenda Mine, British Columbia, Endako Mine, Helen Mine, Ontario