# Relationship history for MSHA mine 1518972

Current hierarchy: **Charles  Collins → CKJ Enterprises, Inc → Beaver Gap No. 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

- **controller_controls_mine:** Randy  Gilkerson et al → Beaver Gap No. 2; 1992-09-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Lexie Coal Company, Inc. → Beaver Gap No. 2; 2006-02-27 to 2006-11-02; source msha-controller-operator-history
- **controller_controls_mine:** Terry L.  Hall → Beaver Gap No. 2; 2006-02-27 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Terry L.  Hall → Lexie Coal Company, Inc.; 2006-02-27 to 2006-11-02; source msha-controller-operator-history
- **operator_operates_mine:** Ember Contracting Inc → Beaver Gap No. 2; 2006-11-03 to 2020-02-03; source msha-controller-operator-history
- **controller_controls_operator:** Randy  Gilkerson et al → Ember Contracting Inc; 2006-11-03 to 2020-02-03; source msha-controller-operator-history
- **controller_controls_mine:** Charles  Collins → Beaver Gap No. 2; 2014-12-08 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** CKJ Enterprises, Inc → Beaver Gap No. 2; 2020-02-04 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Charles  Collins → CKJ Enterprises, Inc; 2020-02-04 to current/open; source msha-controller-operator-history