# Relationship history for MSHA mine 3100119

Current hierarchy: **Cyprus Amax Minerals Company → Cyprus Foote Mineral Company → Kings Mountain Mine & Mineral Plant**

- Valid-time bounds: inclusive, date granularity
- Null end: open-ended in the upstream history row; not independent proof of present control
- Transaction-time observation: 2026-10-18T09:31:49.615908+00:00

## Valid-time edges

- **operator_operates_mine:** Foote Mineral Company → Kings Mountain Mine & Mineral Plant; 1950-01-01 to 1988-04-12; source msha-controller-operator-history
- **controller_controls_mine:** Newmont Corporation → Kings Mountain Mine & Mineral Plant; 1950-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Newmont Corporation → Foote Mineral Company; 1950-01-01 to 1988-04-12; source msha-controller-operator-history
- **operator_operates_mine:** Cyprus Foote Mineral Company → Kings Mountain Mine & Mineral Plant; 1988-04-13 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Cyprus Amax Minerals Company → Kings Mountain Mine & Mineral Plant; 1988-04-13 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Cyprus Amax Minerals Company → Cyprus Foote Mineral Company; 1988-04-13 to current/open; source msha-controller-operator-history