# Relationship history for MSHA mine 0301785

Current hierarchy: **Mark S  Ibison → Ibison Stone Supply Inc → Ibison Stone Supply Inc**

- 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:** Slim's Stone → Ibison Stone Supply Inc; 1997-06-01 to 2024-02-15; source msha-controller-operator-history
- **controller_controls_mine:** Jane  Gossett → Ibison Stone Supply Inc; 1997-06-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Jane  Gossett → Slim's Stone; 1997-06-01 to 2024-02-15; source msha-controller-operator-history
- **controller_controls_mine:** Mark S  Ibison → Ibison Stone Supply Inc; 1999-07-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Ibison Stone Supply Inc → Ibison Stone Supply Inc; 2024-02-16 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Mark S  Ibison → Ibison Stone Supply Inc; 2024-02-16 to current/open; source msha-controller-operator-history