# Relationship history for MSHA mine 4608488

Current hierarchy: **Randy R  Triplett → Triplett Brothers Excavating Inc → Bethlehem #41**

- 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:** Triplett Brothers Excavating Inc → Bethlehem #41; 1995-04-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Randy R  Triplett et al → Bethlehem #41; 1995-04-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Randy R  Triplett et al → Triplett Brothers Excavating Inc; 1995-04-01 to current/open; source msha-controller-operator-history