# Relationship history for MSHA mine 4406275

Current hierarchy: **Holcim Ltd → Mid-Atlantic Materials Inc → CARVER MINE**

- 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:** Northeast Solite Corp → CARVER MINE; 1950-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Aggregate Industries PLC → CARVER MINE; 1950-01-01 to 2009-04-29; source msha-controller-operator-history
- **operator_operates_mine:** Solite Corp → CARVER MINE; 1985-11-01 to 1997-08-28; source msha-controller-operator-history
- **controller_controls_operator:** Northeast Solite Corp → Solite Corp; 1985-11-01 to 1997-08-28; source msha-controller-operator-history
- **operator_operates_mine:** Mid-Atlantic Materials Inc → CARVER MINE; 1997-08-29 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Aggregate Industries PLC → Mid-Atlantic Materials Inc; 1997-08-29 to 2009-04-29; source msha-controller-operator-history
- **controller_controls_mine:** Holcim Ltd → CARVER MINE; 2009-04-30 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Holcim Ltd → Mid-Atlantic Materials Inc; 2009-04-30 to current/open; source msha-controller-operator-history