# Relationship history for MSHA mine 1001514

Current hierarchy: **Mc Guire E C & William G Mc Cargo → Lucky Mac Venture → Lucky Mac Venture**

- 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:** Lucky Mac Venture → Lucky Mac Venture; 1980-10-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Mc Guire E C & William G Mc Cargo → Lucky Mac Venture; 1980-10-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Mc Guire E C & William G Mc Cargo → Lucky Mac Venture; 1980-10-01 to current/open; source msha-controller-operator-history