# Relationship history for MSHA mine 2302064

Current hierarchy: **Lionmark Construction Companies LLC → Indian Creek Materials LLC → Willow Springs Quarry**

- 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

- **controller_controls_mine:** Gary H  Gabel → Willow Springs Quarry; 1950-01-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Gabel Stone Company → Willow Springs Quarry; 1992-07-01 to 2019-02-18; source msha-controller-operator-history
- **controller_controls_operator:** Gary H  Gabel → Gabel Stone Company; 1992-07-01 to 2019-02-18; source msha-controller-operator-history
- **operator_operates_mine:** Indian Creek Materials LLC → Willow Springs Quarry; 2019-02-19 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Lionmark Construction Companies LLC → Willow Springs Quarry; 2019-02-19 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Lionmark Construction Companies LLC → Indian Creek Materials LLC; 2019-02-19 to current/open; source msha-controller-operator-history