# Relationship history for MSHA mine 3605553

Current hierarchy: **Harkcom Rick → Greenley Energy Holdings Of Pa Inc → Mine 40 Greenley Ener Hldngs Of Pa**

- 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:** Roag Meehan Coal Company → Mine 40 Greenley Ener Hldngs Of Pa; 1974-12-01 to 1983-04-08; source msha-controller-operator-history
- **controller_controls_mine:** Meehan Roag Inc & M & K Coal Company → Mine 40 Greenley Ener Hldngs Of Pa; 1974-12-01 to 1983-04-08; source msha-controller-operator-history
- **controller_controls_operator:** Meehan Roag Inc & M & K Coal Company → Roag Meehan Coal Company; 1974-12-01 to 1983-04-08; source msha-controller-operator-history
- **operator_operates_mine:** Greenley Energy Holdings Of Pa Inc → Mine 40 Greenley Ener Hldngs Of Pa; 1983-04-09 to 1990-11-20; source msha-controller-operator-history
- **controller_controls_mine:** Scardino Frank G → Mine 40 Greenley Ener Hldngs Of Pa; 1983-04-09 to 1990-11-20; source msha-controller-operator-history
- **controller_controls_operator:** Scardino Frank G → Greenley Energy Holdings Of Pa Inc; 1983-04-09 to 1990-11-20; source msha-controller-operator-history
- **operator_operates_mine:** Greenley Energy Holdings Of Pa Inc → Mine 40 Greenley Ener Hldngs Of Pa; 1990-11-21 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Harkcom Rick → Mine 40 Greenley Ener Hldngs Of Pa; 1990-11-21 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Harkcom Rick → Greenley Energy Holdings Of Pa Inc; 1990-11-21 to current/open; source msha-controller-operator-history