# Relationship history for MSHA mine 0203510

Current hierarchy: **CCI  (Clyde Companies Inc) → Suncore Construction and Materials, Inc. → Coolidge 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) → Coolidge Pit; 1950-01-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** State 48 Materials LLC → Coolidge Pit; 2024-05-09 to 2025-10-19; source msha-controller-operator-history
- **controller_controls_mine:** Armstrong Family Trust et al → Coolidge Pit; 2024-05-09 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Armstrong Family Trust et al → State 48 Materials LLC; 2024-05-09 to 2025-10-19; source msha-controller-operator-history
- **controller_controls_operator:** Terry L Armstrong Separate Property Trust et al → State 48 Materials LLC; 2024-05-09 to 2025-10-19; source msha-controller-operator-history
- **controller_controls_operator:** William H Armstrong II Separate Property Trust et → State 48 Materials LLC; 2024-05-09 to 2025-10-19; source msha-controller-operator-history
- **operator_operates_mine:** Suncore Construction and Materials, Inc. → Coolidge Pit; 2025-10-20 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** CCI  (Clyde Companies Inc) → Suncore Construction and Materials, Inc.; 2025-10-20 to current/open; source msha-controller-operator-history