US Bureau of Mines Collection - Vacuum Furnaces and Retorts for Purification of Crude Sponge

Photograph

-

Boulder City/Hoover Dam Museum

0022:0163: US Bureau of Mines Collection - C-766-BC Vacuum Furnaces and Retorts for Purification of Crude Sponge: Five vacuum furnaces have been installed and five remain to be completed. These pot furnaces are electrically heated and are operated with a high vacuum both within the furnace and in the retort. Control panels and accessory equipment are mounted under the mezzanine. The two retorts at the right have just been charged and are ready to be placed in the furnaces whose tops are flush with the mezzanine floor. The two in the left foreground are ready for discharging. Each retort has its own vacuum pump. These furnaces are of newer design and are larger than the experimental furnaces shown in C-825-BC.
0022:0163

US Bureau of Mines Collection - C-766-BC Vacuum Furnaces and Retorts for Purification of Crude Sponge: Five vacuum furnaces have been installed and five remain to be completed. These pot furnaces are electrically heated and are operated with a high vacuum both within the furnace and in the retort. Control panels and accessory equipment are mounted under the mezzanine. The two retorts at the right have just been charged and are ready to be placed in the furnaces whose tops are flush with the mezzanine floor. The two in the left foreground are ready for discharging. Each retort has its own vacuum pump. These furnaces are of newer design and are larger than the experimental furnaces shown in C-825-BC.

Name/Title

US Bureau of Mines Collection - Vacuum Furnaces and Retorts for Purification of Crude Sponge

Entry/Object ID

0022:0163

Description

US Bureau of Mines Collection - C-766-BC Vacuum Furnaces and Retorts for Purification of Crude Sponge: Five vacuum furnaces have been installed and five remain to be completed. These pot furnaces are electrically heated and are operated with a high vacuum both within the furnace and in the retort. Control panels and accessory equipment are mounted under the mezzanine. The two retorts at the right have just been charged and are ready to be placed in the furnaces whose tops are flush with the mezzanine floor. The two in the left foreground are ready for discharging. Each retort has its own vacuum pump. These furnaces are of newer design and are larger than the experimental furnaces shown in C-825-BC.

Collection

US Bureau of Mines, Boulder City Businesses

Made/Created

Artist Information

Artist

U. S. Dept. of the Interior - Bureau of Mines

Role

Photographer

Time Period

not provided

Notes

Original or Negative: Original C-766-BC

Location

Location

* Untyped Location

Research Room, Photo Drawer 11

Date

July 6, 2026

Created By

[email protected]

Create Date

February 21, 2024

Updated By

[email protected]

Update Date

July 6, 2026