# Relationship history for MSHA mine 1519641

Current hierarchy: **Gloria  Johns → Black Pearl Resources, LLC → 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: 2026-10-17T05:35:58.500035+00:00

## Valid-time edges

- **controller_controls_mine:** Ryan  Johns → No. 2 Auger; 2011-08-29 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Rhyno Corp LLC → No. 2 Auger; 2011-12-02 to 2014-04-14; source msha-controller-operator-history
- **controller_controls_operator:** Ryan  Johns → Rhyno Corp LLC; 2011-12-02 to 2014-04-14; source msha-controller-operator-history
- **controller_controls_mine:** Gloria  Johns → No. 2 Auger; 2014-03-31 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Black Pearl Resources, LLC → No. 2 Auger; 2014-04-15 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Gloria  Johns → Black Pearl Resources, LLC; 2014-04-15 to current/open; source msha-controller-operator-history