# Relationship history for MSHA mine 0202942

Current hierarchy: **Wayne L  Reidhead; Jerold R  Reidhead → ALPINE EXCAVATION & CONSTRUCTION COMPANY → ALPINE DUMP 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: 2026-10-13T11:19:05.459773+00:00

## Valid-time edges

- **operator_operates_mine:** Alpine Excavation & Construction Company → ALPINE DUMP PIT; 2001-08-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Jerold R  Reidhead  et al → ALPINE DUMP PIT; 2001-08-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Jerold R  Reidhead  et al → Alpine Excavation & Construction Company; 2001-08-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Wayne L  Reidhead  et al → Alpine Excavation & Construction Company; 2001-08-01 to current/open; source msha-controller-operator-history