# Relationship history for MSHA mine 0301467

Current hierarchy: **Jeff D  Mead → Mead Construction → Mead Construction - Mead Pit**

- Valid-time bounds: inclusive, date granularity
- Null end: open-ended in the upstream history row; not independent proof of present control
- Transaction-time observation: 2026-10-17T05:35:58.500035+00:00

## Valid-time edges

- **operator_operates_mine:** Pete Mead Construction Company → Mead Construction - Mead Pit; 1979-11-01 to 1996-12-31; source msha-controller-operator-history
- **controller_controls_mine:** Pete  Mead → Mead Construction - Mead Pit; 1979-11-01 to 1996-12-31; source msha-controller-operator-history
- **controller_controls_operator:** Pete  Mead → Pete Mead Construction Company; 1979-11-01 to 1996-12-31; source msha-controller-operator-history
- **operator_operates_mine:** Mead Construction → Mead Construction - Mead Pit; 1997-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Jeff D  Mead → Mead Construction - Mead Pit; 1997-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Jeff D  Mead → Mead Construction; 1997-01-01 to current/open; source msha-controller-operator-history