# Relationship history for MSHA mine 0102031

Current hierarchy: **Milam Jay E → Mineral Springs Mining Company Inc → Pit 3**

- 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:** Milam Jay E → Pit 3; 1978-05-08 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Mineral Springs Mining Company Inc → Pit 3; 1979-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Milam Jay E → Mineral Springs Mining Company Inc; 1979-01-01 to current/open; source msha-controller-operator-history