# Relationship history for MSHA mine 3604998

Current hierarchy: **Morelli Carl L → Mark Mining No 2 Inc → Mark #2**

- 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:** C Kenneth  Crotsley → Mark #2; 1950-01-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** G M & W Coal Company Inc → Mark #2; 1974-06-01 to 1976-12-08; source msha-controller-operator-history
- **controller_controls_operator:** C Kenneth  Crotsley → G M & W Coal Company Inc; 1974-06-01 to 1976-12-08; source msha-controller-operator-history
- **operator_operates_mine:** G M & W Coal Company Inc → Mark #2; 1976-12-09 to 1978-05-08; source msha-controller-operator-history
- **controller_controls_mine:** Marmon Group Inc → Mark #2; 1976-12-09 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Marmon Group Inc → G M & W Coal Company Inc; 1976-12-09 to 1978-05-08; source msha-controller-operator-history
- **operator_operates_mine:** Mark Mining No 2 Inc → Mark #2; 1978-05-09 to 1984-05-08; source msha-controller-operator-history
- **controller_controls_mine:** Fetterolf Group Inc → Mark #2; 1978-05-09 to 1984-05-08; source msha-controller-operator-history
- **controller_controls_operator:** Fetterolf Group Inc → Mark Mining No 2 Inc; 1978-05-09 to 1984-05-08; source msha-controller-operator-history
- **operator_operates_mine:** Mark Mining No 2 Inc → Mark #2; 1984-05-09 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Morelli Carl L → Mark #2; 1984-05-09 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Morelli Carl L → Mark Mining No 2 Inc; 1984-05-09 to current/open; source msha-controller-operator-history