# Relationship history for MSHA mine 0504407

Current hierarchy: **Murphy Mining & Exploration LLC → Murphy Mining & Exploration, LLC → Chesapeake**

- 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:** Gold States Mining Corp → Chesapeake; 1989-08-01 to 2011-01-05; source msha-controller-operator-history
- **controller_controls_mine:** Watson James E Jr → Chesapeake; 1989-08-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Watson James E Jr → Gold States Mining Corp; 1989-08-01 to 2011-01-05; source msha-controller-operator-history
- **operator_operates_mine:** Gold States Mining Corp → Chesapeake; 2011-01-06 to 2011-12-31; source msha-controller-operator-history
- **controller_controls_mine:** Murphy Mining & Exploration LLC → Chesapeake; 2011-01-06 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Murphy Mining & Exploration LLC → Gold States Mining Corp; 2011-01-06 to 2011-12-31; source msha-controller-operator-history
- **operator_operates_mine:** Murphy Mining & Exploration, LLC → Chesapeake; 2012-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Murphy Mining & Exploration LLC → Chesapeake; 2012-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Murphy Mining & Exploration LLC → Murphy Mining & Exploration, LLC; 2012-01-01 to current/open; source msha-controller-operator-history