# Relationship history for MSHA mine 1519295

Current hierarchy: **Gloria  Johns → Black Pearl Resources, LLC. → No. 2 Face Up**

- 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:** Johnson Coal Sales, Inc. → No. 2 Face Up; 2008-08-22 to 2014-04-28; source msha-controller-operator-history
- **controller_controls_mine:** Carl  Johnson → No. 2 Face Up; 2008-08-22 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Carl  Johnson → Johnson Coal Sales, Inc.; 2008-08-22 to 2014-04-28; source msha-controller-operator-history
- **controller_controls_mine:** Gloria  Johns → No. 2 Face Up; 2014-03-31 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Black Pearl Resources, LLC. → No. 2 Face Up; 2014-04-29 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Gloria  Johns → Black Pearl Resources, LLC.; 2014-04-29 to current/open; source msha-controller-operator-history