# Relationship history for MSHA mine 1514701

Current hierarchy: **Charles E  Mc Cullah → Bowling Mountain Mining Corp → #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

- **operator_operates_mine:** Smooth Sailing Coal Company Inc → #2; 1984-06-01 to 1986-08-08; source msha-controller-operator-history
- **controller_controls_mine:** Runyon James Et Al → #2; 1984-06-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Runyon James Et Al → Smooth Sailing Coal Company Inc; 1984-06-01 to 1986-08-08; source msha-controller-operator-history
- **operator_operates_mine:** Bowling Mountain Mining Corp → #2; 1986-08-09 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Charles E  Mc Cullah → #2; 1986-08-09 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Charles E  Mc Cullah → Bowling Mountain Mining Corp; 1986-08-09 to current/open; source msha-controller-operator-history