A gas-fired belt conveyor oven from Grieve Corp. dries gold ore samples. No. 667 has insulated dampers at each end of the unit, three side doors for access to the workspace, and double doors at the center for access to the heat chamber. Safety features include high and low gas pressure safety switches, airflow safety switches for the 24,500 cfm recirculating blower, and 1,500 cfm exhauster and purge timer with door interlock.
April 2000, RS# 220