# Relationship history for MSHA mine 4606302

Current hierarchy: **Kizer John E → Energy Enterprises Inc → #5 Surface Mine**

- 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:** Marikina Mining Company → #5 Surface Mine; 1981-02-01 to 1984-05-07; source msha-controller-operator-history
- **controller_controls_mine:** Mandeville John R → #5 Surface Mine; 1981-02-01 to 1984-05-07; source msha-controller-operator-history
- **controller_controls_operator:** Mandeville John R → Marikina Mining Company; 1981-02-01 to 1984-05-07; source msha-controller-operator-history
- **controller_controls_mine:** Kizer John E → #5 Surface Mine; 1982-10-15 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Energy Enterprises Inc → #5 Surface Mine; 1984-05-08 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Kizer John E → Energy Enterprises Inc; 1984-05-08 to current/open; source msha-controller-operator-history