# Relationship history for MSHA mine 4103427

Current hierarchy: **Millican Roy E Jr → Epoch Corp → Epoch Corporation**

- 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:** Epoch Corp → Epoch Corporation; 1986-06-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Millican Roy E Jr → Epoch Corporation; 1986-06-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Millican Roy E Jr → Epoch Corp; 1986-06-01 to current/open; source msha-controller-operator-history