# Relationship history for MSHA mine 2601974

Current hierarchy: **Heiner Gary L → Consolidated Mineral Management Corp → Balt 22**

- 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:** Consolidated Mineral Management Corp → Balt 22; 1986-08-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Heiner Gary L → Balt 22; 1986-08-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Heiner Gary L → Consolidated Mineral Management Corp; 1986-08-01 to current/open; source msha-controller-operator-history