# Relationship history for MSHA mine 3401307

Current hierarchy: **Maready Leroy → Energy Associates Inc → Koors Lite #1**

- 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:** Energy Associates Inc → Koors Lite #1; 1981-02-01 to 1981-10-21; source msha-controller-operator-history
- **controller_controls_mine:** Dennie David D Jr → Koors Lite #1; 1981-02-01 to 1981-10-21; source msha-controller-operator-history
- **controller_controls_operator:** Dennie David D Jr → Energy Associates Inc; 1981-02-01 to 1981-10-21; source msha-controller-operator-history
- **operator_operates_mine:** Energy Associates Inc → Koors Lite #1; 1981-10-22 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Maready Leroy → Koors Lite #1; 1981-10-22 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Maready Leroy → Energy Associates Inc; 1981-10-22 to current/open; source msha-controller-operator-history