# Relationship history for MSHA mine 1519279

Current hierarchy: ** → Big Run Mining, Inc → Ky No. 4**

- 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:** Justin  Clear → Ky No. 4; 2008-04-24 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Clear Development, LLC → Ky No. 4; 2008-08-11 to 2009-05-26; source msha-controller-operator-history
- **controller_controls_operator:** Justin  Clear → Clear Development, LLC; 2008-08-11 to 2009-05-26; source msha-controller-operator-history
- **controller_controls_mine:** Xinergy Ltd → Ky No. 4; 2009-05-12 to 2013-02-04; source msha-controller-operator-history
- **operator_operates_mine:** Big Run Mining, Inc → Ky No. 4; 2009-05-27 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Xinergy Ltd → Big Run Mining, Inc; 2009-05-27 to 2013-02-04; source msha-controller-operator-history