This classification applies to rock excavation in connection with construction projects.
Crushing operations shall be separately classified
Tunneling shall be classified as 6251, Tunneling or Underground Mining
Rock quarrying operations shall be classified as 1624(1), Quarries.
Shown below is the previously published phraseology and footnote | Effective Date |
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Phraseology: Footnote: This classification applies to rock excavation in connection with construction projects. Crushing operations shall be separately classified Tunneling shall be classified as 6251, Tunneling Rock quarrying operations shall be classified as 1624(1), Quarries. | 9/1/2021 |
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