# Relationship history for MSHA mine 1002045

Current hierarchy: **CCI  (Clyde Companies Inc) → Suncore Construction and Materials, Inc. → Mobile impact crusher**

- 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) → Mobile impact crusher; 1950-01-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Matzdorff Resources LLC → Mobile impact crusher; 2003-09-05 to 2008-03-27; source msha-controller-operator-history
- **controller_controls_mine:** Michael R  Matzdorff et al → Mobile impact crusher; 2003-09-05 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Michael R  Matzdorff et al → Matzdorff Resources LLC; 2003-09-05 to 2008-03-27; source msha-controller-operator-history
- **controller_controls_operator:** Melinda S  Matzdorff et al → Matzdorff Resources LLC; 2003-09-05 to 2008-03-27; source msha-controller-operator-history
- **operator_operates_mine:** Clements Concrete Company → Mobile impact crusher; 2008-03-28 to 2010-09-15; source msha-controller-operator-history
- **controller_controls_mine:** CCI  (Clyde Companies Inc) → Mobile impact crusher; 2008-03-28 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** CCI  (Clyde Companies Inc) → Clements Concrete Company; 2008-03-28 to 2010-09-15; source msha-controller-operator-history
- **operator_operates_mine:** Clements Concrete Company → Mobile impact crusher; 2010-09-16 to 2010-09-30; source msha-controller-operator-history
- **controller_controls_operator:** CCI  (Clyde Companies Inc) → Clements Concrete Company; 2010-09-16 to 2010-09-30; source msha-controller-operator-history
- **operator_operates_mine:** Clements Concrete Co → Mobile impact crusher; 2010-10-01 to 2016-12-01; source msha-controller-operator-history
- **controller_controls_operator:** CCI  (Clyde Companies Inc) → Clements Concrete Co; 2010-10-01 to 2016-12-01; source msha-controller-operator-history
- **operator_operates_mine:** Suncore Construction and Materials, Inc. → Mobile impact crusher; 2016-12-02 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** CCI  (Clyde Companies Inc) → Suncore Construction and Materials, Inc.; 2016-12-02 to current/open; source msha-controller-operator-history