# Relationship history for MSHA mine 4604660

Current hierarchy: **Francis David L → Princess Coals Inc → Pickens No 2 Tipple**

- 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

- **operator_operates_mine:** Southeastern Construction Corp → Pickens No 2 Tipple; 1974-01-01 to 1976-07-11; source msha-controller-operator-history
- **controller_controls_mine:** Kaye Robert → Pickens No 2 Tipple; 1974-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Kaye Robert → Southeastern Construction Corp; 1974-01-01 to 1976-07-11; source msha-controller-operator-history
- **operator_operates_mine:** Princess Coals Inc → Pickens No 2 Tipple; 1976-07-12 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Francis David L → Pickens No 2 Tipple; 1976-07-12 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Francis David L → Princess Coals Inc; 1976-07-12 to current/open; source msha-controller-operator-history