# Relationship history for MSHA mine 2901643

Current hierarchy: **Neil  Jackson → Mountain States Constructors Inc → Crusher No 2**

- 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:** Mountain States Constructors Inc → Crusher No 2; 1950-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Steve  Benoit → Crusher No 2; 1950-01-01 to 2012-10-10; source msha-controller-operator-history
- **controller_controls_operator:** Steve  Benoit → Mountain States Constructors Inc; 1950-01-01 to 2012-10-10; source msha-controller-operator-history
- **controller_controls_mine:** Karen  Pace et al → Crusher No 2; 2012-10-11 to 2024-06-27; source msha-controller-operator-history
- **controller_controls_operator:** Karen  Pace et al → Mountain States Constructors Inc; 2012-10-11 to 2024-06-27; source msha-controller-operator-history
- **controller_controls_operator:** David  Otoski et al → Mountain States Constructors Inc; 2012-10-11 to 2024-06-27; source msha-controller-operator-history
- **controller_controls_mine:** Neil  Jackson → Crusher No 2; 2024-06-28 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Neil  Jackson → Mountain States Constructors Inc; 2024-06-28 to current/open; source msha-controller-operator-history