# Relationship history for MSHA mine 3600120

Current hierarchy: **New Enterprise Stone & Lime Company Inc → New Enterprise Stone & Lime Co., Inc. → Clifford 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

- **controller_controls_mine:** Stabler Companies Inc → Clifford Quarry; 1950-01-01 to 2008-01-31; source msha-controller-operator-history
- **operator_operates_mine:** State Aggregates Inc → Clifford Quarry; 1950-01-01 to 2005-09-25; source msha-controller-operator-history
- **controller_controls_mine:** Stabler Companies Inc → Clifford Quarry; 1950-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Stabler Companies Inc → State Aggregates Inc; 1950-01-01 to 2005-09-25; source msha-controller-operator-history
- **controller_controls_mine:** New Enterprise Stone & Lime Company Inc → Clifford Quarry; 1950-01-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Eastern Industries Inc → Clifford Quarry; 2005-09-26 to 2011-10-23; source msha-controller-operator-history
- **controller_controls_operator:** Stabler Companies Inc → Eastern Industries Inc; 2005-09-26 to 2008-01-31; source msha-controller-operator-history
- **controller_controls_mine:** New Enterprise Stone & Lime Company Inc → Clifford Quarry; 2008-02-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** New Enterprise Stone & Lime Company Inc → Eastern Industries Inc; 2008-02-01 to 2011-10-23; source msha-controller-operator-history
- **operator_operates_mine:** New Enterprise Stone & Lime Co., Inc. → Clifford Quarry; 2011-10-24 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** New Enterprise Stone & Lime Company Inc → New Enterprise Stone & Lime Co., Inc.; 2011-10-24 to current/open; source msha-controller-operator-history