TUNNELING OR UNDERGROUND MINING — all employees
This classification applies to the construction of tunnels or caves and includes the installation of concrete lining, electrical wiring or plumbing. This classification also applies to tunneling in connection with dam construction or street or road construction, including tunneling underneath roadways or railroads by hydraulic jacking pipe exceeding 6' in diameter through the earth.
This classification also applies to the operation of underground mines for the extraction of ores or minerals, including but not limited to gold, borax, graphite, gypsum and perlite. This classification includes all underground and aboveground operations, including but not limited to the drilling of shafts, tunnels or drifts; the erection of shoring or supports; the construction of underground tramways; and the installation, operation or maintenance of underground or above ground equipment or machinery. This classification includes mining engineers engaged in surveying, mapping or geophysical exploration of sites.
Ore milling operations shall be separately classified as 1452, Mining — ore milling.
Surface mining (open pit method) operations shall be classified as 1122, Mining — surface.
| Shown below is the previously published phraseology and footnote | Effective Date |
|---|---|
TUNNELING — all work to completion — including lining | 9/1/2021 |
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