# Relationship history for MSHA mine 4105588

Current hierarchy: **Michael J  Babcock; Pat  Curry → Caprock Calcium, LLC → Caprock Calcium**

- 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:** Caprock Calcium, LLC → Caprock Calcium; 2022-03-11 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Pat  Curry et al → Caprock Calcium; 2022-03-11 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Pat  Curry et al → Caprock Calcium, LLC; 2022-03-11 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Michael J  Babcock et al → Caprock Calcium, LLC; 2022-03-11 to current/open; source msha-controller-operator-history