# Relationship history for MSHA mine 4608330

Current hierarchy: **Pittston Company → Molloy Mining Inc → Molloy-Clay Highwall Miner**

- Valid-time bounds: inclusive, date granularity
- Null end: open-ended in the upstream history row; not independent proof of present control
- Transaction-time observation: 2026-10-13T11:19:05.459773+00:00

## Valid-time edges

- **controller_controls_mine:** Horizon Natural Resources Incorporated → Molloy-Clay Highwall Miner; 1993-02-04 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Vandalia Resources Inc → Molloy-Clay Highwall Miner; 1993-08-01 to 1994-01-13; source msha-controller-operator-history
- **controller_controls_operator:** Horizon Natural Resources Incorporated → Vandalia Resources Inc; 1993-08-01 to 1994-01-13; source msha-controller-operator-history
- **operator_operates_mine:** Molloy Mining Inc → Molloy-Clay Highwall Miner; 1994-01-14 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Pittston Company → Molloy-Clay Highwall Miner; 1994-01-14 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Pittston Company → Molloy Mining Inc; 1994-01-14 to current/open; source msha-controller-operator-history