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Notes:
Reference “The Odyssey of Ogdensburg and The Sterling Zinc Mine” page 22.
The ore body is at a 55° slant from horizontal.
The miner sled descends at 800 ft per minute
Main shaft; divided into 5 compartments;
Pipes, cables, and steel ladderway
2 for large cages to carry miners, materials and equipment
2 for the high speed skip which hoisted the crushed ore to the mill