# Relationship history for MSHA mine 4404196

Current hierarchy: **David A White; Frank E Surface; James  Mitchell → Superior Paving Corp. → PSC1 - EXTEC 5000S Screen**

- 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

- **operator_operates_mine:** Marvin V Templeton & Sons Inc → PSC1 - EXTEC 5000S Screen; 1950-01-01 to 2011-01-09; source msha-controller-operator-history
- **controller_controls_mine:** Templeton Marvin V & Sons Inc → PSC1 - EXTEC 5000S Screen; 1950-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Templeton Marvin V & Sons Inc → Marvin V Templeton & Sons Inc; 1950-01-01 to 2011-01-09; source msha-controller-operator-history
- **controller_controls_mine:** Boxley Materials Co → PSC1 - EXTEC 5000S Screen; 1950-01-01 to 2016-03-20; source msha-controller-operator-history
- **operator_operates_mine:** Boxley Asphalt, LLC → PSC1 - EXTEC 5000S Screen; 2011-01-10 to 2016-03-20; source msha-controller-operator-history
- **controller_controls_mine:** Boxley Materials Co → PSC1 - EXTEC 5000S Screen; 2011-01-10 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Boxley Materials Co → Boxley Asphalt, LLC; 2011-01-10 to 2016-03-20; source msha-controller-operator-history
- **operator_operates_mine:** Boxley Materials Company → PSC1 - EXTEC 5000S Screen; 2016-03-21 to 2024-03-26; source msha-controller-operator-history
- **controller_controls_operator:** Boxley Materials Co → Boxley Materials Company; 2016-03-21 to 2016-03-20; source msha-controller-operator-history
- **controller_controls_mine:** Summit Materials LLC → PSC1 - EXTEC 5000S Screen; 2016-03-21 to 2025-02-09; source msha-controller-operator-history
- **controller_controls_operator:** Summit Materials LLC → Boxley Materials Company; 2016-03-21 to 2024-03-26; source msha-controller-operator-history
- **operator_operates_mine:** Superior Paving Corp. → PSC1 - EXTEC 5000S Screen; 2024-03-27 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** David A White et al → PSC1 - EXTEC 5000S Screen; 2024-03-27 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** David A White et al → Superior Paving Corp.; 2024-03-27 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Frank E Surface et al → Superior Paving Corp.; 2024-03-27 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** James  Mitchell et al → Superior Paving Corp.; 2024-03-27 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Quikrete Holdings Inc. → PSC1 - EXTEC 5000S Screen; 2025-02-10 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Quikrete Holdings Inc. → Boxley Materials Company; 2025-02-10 to 2024-03-26; source msha-controller-operator-history