Marland Model 100 "mine-laser". (1980)

Marland Model 300 "mine-laser" at Barrick Gold's Holt-McDermott Mine, Ontario. (Nov., '94)

Marland Model 100 "mine-laser" mounted at the collar of a X-cut. 8' wide by 9' high tracked heading. Foresight station approximately 100' ahead in the X-cut. 12-Volt battery supply.