# Relationship history for MSHA mine 2601881

Current hierarchy: **Papatheodorou Chris → Capital Trading Corp International → Capital Trading Mill**

- 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:** Energy Resources Investment Corp → Capital Trading Mill; 1979-11-15 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Quadra Mining & Development Company → Capital Trading Mill; 1984-03-01 to 1985-02-28; source msha-controller-operator-history
- **controller_controls_operator:** Energy Resources Investment Corp → Quadra Mining & Development Company; 1984-03-01 to 1985-02-28; source msha-controller-operator-history
- **operator_operates_mine:** Capital Trading Corp International → Capital Trading Mill; 1985-03-01 to 1986-03-16; source msha-controller-operator-history
- **controller_controls_mine:** Wadsworth James L → Capital Trading Mill; 1985-03-01 to 1986-03-16; source msha-controller-operator-history
- **controller_controls_operator:** Wadsworth James L → Capital Trading Corp International; 1985-03-01 to 1986-03-16; source msha-controller-operator-history
- **operator_operates_mine:** Capital Trading Corp International → Capital Trading Mill; 1986-03-17 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Papatheodorou Chris → Capital Trading Mill; 1986-03-17 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Papatheodorou Chris → Capital Trading Corp International; 1986-03-17 to current/open; source msha-controller-operator-history