# Relationship history for MSHA mine 1516277

Current hierarchy: **Tim Doug  Johnson → Chloe Ridge Coal Company Inc → #105**

- 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:** Tim Doug  Johnson → #105; 1984-03-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Ward James T → #105; 1987-01-16 to 1991-09-10; source msha-controller-operator-history
- **operator_operates_mine:** Ward Brothers Construction Inc → #105; 1988-01-01 to 1989-06-15; source msha-controller-operator-history
- **controller_controls_operator:** Ward James T → Ward Brothers Construction Inc; 1988-01-01 to 1989-06-15; source msha-controller-operator-history
- **operator_operates_mine:** Chloe Ridge Coal Company Inc → #105; 1989-06-16 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Tim Doug  Johnson → Chloe Ridge Coal Company Inc; 1989-06-16 to current/open; source msha-controller-operator-history