# Relationship history for MSHA mine 1200698

Current hierarchy: **Robert  Homan → St Henry Tile Company Inc → LIMBERLOST SAND AND GRAVEL**

- Valid-time bounds: inclusive, date granularity
- Null end: open-ended in the upstream history row; not independent proof of present control
- Transaction-time observation: 2026-10-18T09:31:49.615908+00:00

## Valid-time edges

- **operator_operates_mine:** Habig Trucking & Excavating Inc → LIMBERLOST SAND AND GRAVEL; 1950-01-01 to 1982-10-20; source msha-controller-operator-history
- **controller_controls_mine:** James L  Gentis → LIMBERLOST SAND AND GRAVEL; 1950-01-01 to 1982-10-20; source msha-controller-operator-history
- **controller_controls_operator:** James L  Gentis → Habig Trucking & Excavating Inc; 1950-01-01 to 1982-10-20; source msha-controller-operator-history
- **operator_operates_mine:** St Henry Tile Company Inc → LIMBERLOST SAND AND GRAVEL; 1982-10-21 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Robert  Homan → LIMBERLOST SAND AND GRAVEL; 1982-10-21 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Robert  Homan → St Henry Tile Company Inc; 1982-10-21 to current/open; source msha-controller-operator-history