U. S. Bureau of Mines Collection - C-523B-BC Drum filter in chromium plant

Photograph

-

Boulder City/Hoover Dam Museum

0022:0131: U. S. Bureau of Mines Collection - C-523B-BC Drum filter in chromium plant. ["This is one of several acid-proof drum filters, of various sizes, available at the station. The operation shown is separating iron, aluminum, and magnesium hydroxides from ammonium sulfate solution. These three metals occur with chromium in low-grade ore. They are being separated here for discard, and the ammonium sulfate solution will be re-used in the leach plant. One operator normally handles this and other operations."]
0022:0131

U. S. Bureau of Mines Collection - C-523B-BC Drum filter in chromium plant. ["This is one of several acid-proof drum filters, of various sizes, available at the station. The operation shown is separating iron, aluminum, and magnesium hydroxides from ammonium sulfate solution. These three metals occur with chromium in low-grade ore. They are being separated here for discard, and the ammonium sulfate solution will be re-used in the leach plant. One operator normally handles this and other operations."]

Name/Title

U. S. Bureau of Mines Collection - C-523B-BC Drum filter in chromium plant

Entry/Object ID

0022:0131

Description

U. S. Bureau of Mines Collection - C-523B-BC Drum filter in chromium plant.; "This is one of several acid-proof drum filters, of various sizes, available at the station. The operation shown is separating iron, aluminum, and magnesium hydroxides from ammonium sulfate solution. These three metals occur with chromium in low-grade ore. They are being separated here for discard, and the ammonium sulfate solution will be re-used in the leach plant. One operator normally handles this and other operations."

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

Location

Location

* Untyped Location

Research Room, Photo Drawer 11

Date

June 22, 2026

Created By

[email protected]

Create Date

February 5, 2024

Updated By

[email protected]

Update Date

June 22, 2026