# Relationship history for MSHA mine 3001869

Current hierarchy: **Raymond W  Manley → Ray Manley Construction Inc → Manley Sand Pit**

- 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:** New York State Department Of Transportation → Manley Sand Pit; 1950-01-01 to 1985-04-18; source msha-controller-operator-history
- **controller_controls_mine:** State Of New York → Manley Sand Pit; 1950-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** State Of New York → New York State Department Of Transportation; 1950-01-01 to 1985-04-18; source msha-controller-operator-history
- **controller_controls_mine:** Raymond W  Manley → Manley Sand Pit; 1985-03-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Ray Manley Construction Inc → Manley Sand Pit; 1985-04-19 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Raymond W  Manley → Ray Manley Construction Inc; 1985-04-19 to current/open; source msha-controller-operator-history