Showing 1 - 2 of 2 , query time: 0.01s
Cover Image
Format:
Image
The main shaft house for the New Jersey Zinc Co. is the tall building at far right. The stacked lumber is for mine stoping. This view is facing north.
Cover Image
Format:
Image
Mine stope showing the reinforcing timbers used. On the left side of the picture is a thermometer used to monitor temperatures.