# Relationship history for MSHA mine 4406892

Current hierarchy: **Joe Douglas  Kilgore → Allied Coal Company Inc → No 1 Pitt**

- 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:** Allied Coal Company Inc → No 1 Pitt; 1997-11-01 to 1999-10-31; source msha-controller-operator-history
- **controller_controls_mine:** Larry Joe  McReynolds → No 1 Pitt; 1997-11-01 to 1999-10-31; source msha-controller-operator-history
- **controller_controls_operator:** Larry Joe  McReynolds → Allied Coal Company Inc; 1997-11-01 to 1999-10-31; source msha-controller-operator-history
- **operator_operates_mine:** Allied Coal Company Inc → No 1 Pitt; 1999-11-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Joe Douglas  Kilgore → No 1 Pitt; 1999-11-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Joe Douglas  Kilgore → Allied Coal Company Inc; 1999-11-01 to current/open; source msha-controller-operator-history