Inside a metal foundry: Pouring a container load of metal scrap and bars into a large melter. The melter is humming, the scrap metal clanks and rattles. Some workers can be heard in the distance. Version 1. Industrial,
Inside a metal foundry: Pouring some liquid aluminum (or molten iron, etc.) into a melting pot. The melter is humming in the background, some workers can be heard in the distance. Industrial,
Inside a metal foundry: Opening the lid of the melter's blast furnace. The melter is humming in the background, the furnace hisses loudly as the door is opened. Industrial,