# Relationship history for MSHA mine 4202575

Current hierarchy: **CCI  (Clyde Companies Inc) → Suncore Construction and Materials Inc. → Richfield 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) → Richfield Pit; 1950-01-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** JKL Construction, Inc. → Richfield Pit; 2011-06-08 to 2026-01-20; source msha-controller-operator-history
- **controller_controls_mine:** William J  LaJeunesse et al → Richfield Pit; 2011-06-08 to 2023-11-09; source msha-controller-operator-history
- **controller_controls_operator:** William J  LaJeunesse et al → JKL Construction, Inc.; 2011-06-08 to 2023-11-09; source msha-controller-operator-history
- **controller_controls_operator:** Jeff  LaJeunesse et al → JKL Construction, Inc.; 2011-06-08 to 2023-11-09; source msha-controller-operator-history
- **controller_controls_mine:** Jeff  LaJeunesse → Richfield Pit; 2023-11-10 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Jeff  LaJeunesse → JKL Construction, Inc.; 2023-11-10 to 2026-01-20; source msha-controller-operator-history
- **operator_operates_mine:** Suncore Construction and Materials Inc. → Richfield Pit; 2026-01-21 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** CCI  (Clyde Companies Inc) → Suncore Construction and Materials Inc.; 2026-01-21 to current/open; source msha-controller-operator-history