# Relationship history for MSHA mine 1518691

Current hierarchy: **Barry  Runyon; Brian A  Runyon → K-Jac Energy, Inc. → No. 41 Auger S/N 41**

- Valid-time bounds: inclusive, date granularity
- Null end: open-ended in the upstream history row; not independent proof of present control
- Transaction-time observation: 2026-10-17T05:35:58.500035+00:00

## Valid-time edges

- **controller_controls_mine:** Laird T  Orr Jr. → No. 41 Auger S/N 41; 1978-05-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Barry  Runyon et al → No. 41 Auger S/N 41; 1985-05-08 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** K-Jac Energy Inc → No. 41 Auger S/N 41; 2003-11-24 to 2011-12-11; source msha-controller-operator-history
- **controller_controls_operator:** Barry  Runyon et al → K-Jac Energy Inc; 2003-11-24 to 2011-12-11; source msha-controller-operator-history
- **controller_controls_operator:** Brian A  Runyon et al → K-Jac Energy Inc; 2003-11-24 to 2011-12-11; source msha-controller-operator-history
- **operator_operates_mine:** Green Hill Mining Inc → No. 41 Auger S/N 41; 2011-12-12 to 2012-07-22; source msha-controller-operator-history
- **controller_controls_operator:** Laird T  Orr Jr. → Green Hill Mining Inc; 2011-12-12 to 2012-07-22; source msha-controller-operator-history
- **operator_operates_mine:** K-Jac Energy, Inc. → No. 41 Auger S/N 41; 2012-07-23 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Barry  Runyon et al → K-Jac Energy, Inc.; 2012-07-23 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Brian A  Runyon et al → K-Jac Energy, Inc.; 2012-07-23 to current/open; source msha-controller-operator-history