# Relationship history for MSHA mine 1001981

Current hierarchy: **Doyle  Beck → High Valley Concrete LLC → High Valley Conrete LLC**

- 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:** High Valley Concrete Llc → High Valley Conrete LLC; 2000-07-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Doyle  Beck → High Valley Conrete LLC; 2000-07-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Doyle  Beck → High Valley Concrete Llc; 2000-07-01 to current/open; source msha-controller-operator-history