# Relationship history for MSHA mine 1518121

Current hierarchy: **Barry  Runyon; Brian A  Runyon → K-Jac Energy Inc → No 2 Auger**

- 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:** Barry  Runyon et al → No 2 Auger; 1985-05-08 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** K-Jac Energy Inc → No 2 Auger; 1998-11-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Barry  Runyon et al → K-Jac Energy Inc; 1998-11-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Brian A  Runyon et al → K-Jac Energy Inc; 1998-11-01 to current/open; source msha-controller-operator-history