| 213114 |
Blasting services, metal mining, on a contract basis |
| 213114 |
Boring test holes for metal mining on a contract basis |
| 213114 |
Draining or pumping of metal mines on a contract basis |
| 213114 |
Drilling services for metal mining on a contract basis |
| 213114 |
Exploration services for metal (except geophysical surveying and mapping) on a contract basis |
| 213114 |
Metal mining support services on a contract basis (e.g., shaft sinking, tunneling, blasting) (except geophysical surveying and mapping, site preparation, construction, and transportation activities) |
| 213114 |
Mine development (except site preparation and related construction contractor activities) for metal mining on a contract basis |
| 213114 |
Mine shaft sinking services for metal mining on a contract basis |
| 213114 |
Mine tunneling services for metal mining on a contract basis |
| 213114 |
Overburden removal for metal mining on a contract basis |