Overview
Stage | Production |
Mine Type | Open Pit |
Commodities |
|
Mining Method |
|
Production Start | ... |
The Mill Creek operation consists of the Mill Creek mine and two silica sand processing plants separated by four miles. |
Source:
p. 35
USS Holdings, Inc. through U.S. Silica Company, own and operate the Mill Creek mine and processing plant.
Contractors
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Deposit Type
- Sedimentary
- Sandstone hosted
Summary:
The deposit has a minimum silica (SiO2) content of 99%. The controlling attributes are iron (Fe2O3) content, calcium (CaO) content and grain size distribution. The sand/overburden contact is occasionally concentrated in calcium and any sand with greater than 0.03% CaO is removed during the overburden removal process. Sand with iron greater than 0.03% Fe2O3 is not mined.
The reserves are part of the Oil Creek Formation in south-central Oklahoma.
Summary:
Company surface mines in Mill Creek use natural gas and electricity to produce whole grain, ground and fine ground silica through hydraulic mining.
At Mill Creek, sand is mined hydraulically and transported to the process area in a slurry.
Source:
Summary:
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Source:
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Operational Metrics:
Metrics | 2023 | 2022 | 2021 | 2020 | 2019 | 2018 |
Ore tonnes mined
| ...... | ...... | ...... | ...... | 2,045 k tons of rom frac sand | 2,437 k tons of rom frac sand |
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Reserves at December 31, 2023:
Category | Tonnage | Commodity | Recoverable Metal |
Proven
|
k tons
|
Silica
|
16,507 k tons
|
Inferred
|
16,361 k tons
|
Silica
|
|
Financials:
| Units | 2020 |
Book Value
|
M USD
| ...... |
Corporate Filings & Presentations:
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