A professional who tends vacuum tank that dries priming mixture, and dries and stores loaded cartridge primers and primed rim-fire cartridge cases. Respnsibilities include:

• Transfers trays or boards filled with explosive primers or cases from loading room to steam-heated dryhouse, using shockproof cart.
• Places filled trays in numbered racks or bins.
• Reads gauges and turns valves to control temperature in dryhouse.
• Collects primers and cases from storage to fill requisitions and keeps perpetual inventory.
• Loads primers on screen trays of vacuum tank and starts vacuum pump, steam heat, and fans that force-dry priming mixture when requisitions do not permit sufficient time for air drying.
• May deliver primers and cases to production departments and record date, lot number, and grade.