# Relationship history for MSHA mine 0103547

Current hierarchy: **Arcosa, Inc → Creekwood Resources, LLC → Shady Grove 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

- **operator_operates_mine:** Creekwood Resources, LLC → Shady Grove Quarry; 2021-05-11 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Jeffrey  Major → Shady Grove Quarry; 2021-05-11 to 2022-08-15; source msha-controller-operator-history
- **controller_controls_operator:** Jeffrey  Major → Creekwood Resources, LLC; 2021-05-11 to 2022-08-15; source msha-controller-operator-history
- **controller_controls_mine:** Arcosa, Inc → Shady Grove Quarry; 2022-08-16 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Arcosa, Inc → Creekwood Resources, LLC; 2022-08-16 to current/open; source msha-controller-operator-history