# Relationship history for MSHA mine 4607609

Current hierarchy: **Cyprus Amax Minerals Company → Bentley Coal Company → Long Run Deep Mine No 1**

- Valid-time bounds: inclusive, date granularity
- Null end: open-ended in the upstream history row; not independent proof of present control
- Transaction-time observation: 2026-10-17T05:35:58.500035+00:00

## Valid-time edges

- **controller_controls_mine:** Cyprus Amax Minerals Company → Long Run Deep Mine No 1; 1988-02-17 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Richard Lewis Enterprises Inc → Long Run Deep Mine No 1; 1988-10-01 to 1989-07-17; source msha-controller-operator-history
- **controller_controls_mine:** Parker Raymond F → Long Run Deep Mine No 1; 1988-10-01 to 1989-07-17; source msha-controller-operator-history
- **controller_controls_operator:** Parker Raymond F → Richard Lewis Enterprises Inc; 1988-10-01 to 1989-07-17; source msha-controller-operator-history
- **operator_operates_mine:** Bentley Coal Company → Long Run Deep Mine No 1; 1989-07-18 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Cyprus Amax Minerals Company → Bentley Coal Company; 1989-07-18 to current/open; source msha-controller-operator-history