# Relationship history for MSHA mine 1506869

Current hierarchy: **Bailey Toby & Teddy → Bailey & Deel Mining Corp → H-3**

- 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:** Pike Buchanan Coal Company Inc → H-3; 1974-01-01 to 1977-03-09; source msha-controller-operator-history
- **controller_controls_mine:** Coleman Roy Darrell → H-3; 1974-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Coleman Roy Darrell → Pike Buchanan Coal Company Inc; 1974-01-01 to 1977-03-09; source msha-controller-operator-history
- **operator_operates_mine:** Sun Coal Company → H-3; 1977-03-10 to 1977-07-31; source msha-controller-operator-history
- **controller_controls_mine:** Adams Ray E Jr & Scotty Cassell → H-3; 1977-03-10 to 1977-07-31; source msha-controller-operator-history
- **controller_controls_operator:** Adams Ray E Jr & Scotty Cassell → Sun Coal Company; 1977-03-10 to 1977-07-31; source msha-controller-operator-history
- **controller_controls_mine:** Bailey Toby & Teddy Et Al → H-3; 1977-05-17 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Bailey & Deel Mining Corp → H-3; 1977-08-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Bailey Toby & Teddy Et Al → Bailey & Deel Mining Corp; 1977-08-01 to current/open; source msha-controller-operator-history