# Relationship history for MSHA mine 4502361

Current hierarchy: **ITT Corp → Itt Rayonier Inc → 5252 Deep Creek Quarry**

- 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:** Itt Rayonier Inc → 5252 Deep Creek Quarry; 1950-01-01 to 1979-10-29; source msha-controller-operator-history
- **controller_controls_mine:** ITT Corp → 5252 Deep Creek Quarry; 1950-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** ITT Corp → Itt Rayonier Inc; 1950-01-01 to 1979-10-29; source msha-controller-operator-history
- **operator_operates_mine:** Pattison & O'Connor Inc → 5252 Deep Creek Quarry; 1979-10-30 to 1980-12-31; source msha-controller-operator-history
- **controller_controls_mine:** Pattison Don → 5252 Deep Creek Quarry; 1979-10-30 to 1980-12-31; source msha-controller-operator-history
- **controller_controls_operator:** Pattison Don → Pattison & O'Connor Inc; 1979-10-30 to 1980-12-31; source msha-controller-operator-history
- **operator_operates_mine:** Itt Rayonier Inc → 5252 Deep Creek Quarry; 1981-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** ITT Corp → Itt Rayonier Inc; 1981-01-01 to current/open; source msha-controller-operator-history