![0022:0154: U. S. Bureau of Mines Collection - C-823-BC Control panel and furnace coil for high frequency furnace ["This is the largest of the three high-frequency furnaces used by the Titanium Research Section. A high-frequency furnace heats by induced current in a metallic charge or in a conducting crucible around the charge. There is no direct connection between the heating coil and the charge to be melted, making it possible to carry out operations in a vacuum or controlled atmosphere. It is one of the most useful tools possessed by the metallurgist."]](https://d8e7jbdw4fu0e.cloudfront.net/4452/7e1d1870-c1ed-11ee-ab27-e56e0f1cdedf-wzIJHkh.lg-nt@2x.jpg)
U. S. Bureau of Mines Collection - C-823-BC Control panel and furnace coil for high frequency furnace ["This is the largest of the three high-frequency furnaces used by the Titanium Research Section. A high-frequency furnace heats by induced current in a metallic charge or in a conducting crucible around the charge. There is no direct connection between the heating coil and the charge to be melted, making it possible to carry out operations in a vacuum or controlled atmosphere. It is one of the most useful tools possessed by the metallurgist."]