# Relationship history for MSHA mine 4200366

Current hierarchy: **CCI  (Clyde Companies Inc) → Suncore Construction and Materials Inc. → QUALITY 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: 2026-10-13T11:19:05.459773+00:00

## Valid-time edges

- **controller_controls_mine:** CCI  (Clyde Companies Inc) → QUALITY PIT; 1950-01-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Cedar Aggregates Products Inc → QUALITY PIT; 1950-01-01 to 1984-07-30; source msha-controller-operator-history
- **controller_controls_mine:** Jay L  Allred → QUALITY PIT; 1950-01-01 to 1984-07-30; source msha-controller-operator-history
- **controller_controls_operator:** Jay L  Allred → Cedar Aggregates Products Inc; 1950-01-01 to 1984-07-30; source msha-controller-operator-history
- **operator_operates_mine:** Cedar Rock & Sand Inc → QUALITY PIT; 1984-07-31 to 1987-01-26; source msha-controller-operator-history
- **controller_controls_mine:** Steve L  Gilbert → QUALITY PIT; 1984-07-31 to 1987-01-26; source msha-controller-operator-history
- **controller_controls_operator:** Steve L  Gilbert → Cedar Rock & Sand Inc; 1984-07-31 to 1987-01-26; source msha-controller-operator-history
- **operator_operates_mine:** Quality Concrete & Rock Products Inc → QUALITY PIT; 1987-01-27 to 1996-10-22; source msha-controller-operator-history
- **controller_controls_mine:** Jack  Carter → QUALITY PIT; 1987-01-27 to 1996-10-22; source msha-controller-operator-history
- **controller_controls_operator:** Jack  Carter → Quality Concrete & Rock Products Inc; 1987-01-27 to 1996-10-22; source msha-controller-operator-history
- **operator_operates_mine:** Suncore Construction and Materials Inc. → QUALITY PIT; 1996-10-23 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** CCI  (Clyde Companies Inc) → Suncore Construction and Materials Inc.; 1996-10-23 to current/open; source msha-controller-operator-history