# Relationship history for MSHA mine 2500747

Current hierarchy: **Tom  Rutjens → Pollock Redi Mix → HOME 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:** Pollock Redimix Inc → HOME PIT; 1950-01-01 to 2006-04-06; source msha-controller-operator-history
- **controller_controls_mine:** Allan J  Pollock → HOME PIT; 1950-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Allan J  Pollock → Pollock Redimix Inc; 1950-01-01 to 2006-04-06; source msha-controller-operator-history
- **operator_operates_mine:** Pollock Redi Mix → HOME PIT; 2006-04-07 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Tom  Rutjens → HOME PIT; 2006-04-07 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Tom  Rutjens → Pollock Redi Mix; 2006-04-07 to current/open; source msha-controller-operator-history