San Bernardino County:
Gold Belt Mine
The Great Gold Belt Mine, 14 miles northeast of Amboy, was quite a discovery. When stumbled upon in 1907, the remains of old arrastres were found in the wash, and the previous miners were surmised to have been Indians. 229
The Great Gold Belt Mining Company was organized, and in June, 1909, I. Plummer and William Heath were working 30 men running tunnels for water and sinking a shaft. They had hoped to have a stamp mill running by winter with 100 men employed, but it was not until 1911 that the mill finally was received. In January, 1911 twenty-five men were employed there, and later that month, a new Chilean mill was shipped to the mine. By April 1, the mill in operation. Work continued through the summer but the mill was shut down in September. Some mining continued off and on until 1914. 230
The mine was relocated and renamed the Camp Castle Mine in 1923, and a larger, more modern mill was installed, but in 1930 the property was idle. 231