# Relationship history for MSHA mine 0801048

Current hierarchy: **Quikrete Holdings Inc. → Quikrete-Pensacola → Quikrete 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

- **operator_operates_mine:** Quikrete Of Pensacola Inc → Quikrete Mine; 1986-05-01 to 1998-09-10; source msha-controller-operator-history
- **controller_controls_mine:** Jerome L  Tujague Jr → Quikrete Mine; 1986-05-01 to 1998-09-10; source msha-controller-operator-history
- **controller_controls_operator:** Jerome L  Tujague Jr → Quikrete Of Pensacola Inc; 1986-05-01 to 1998-09-10; source msha-controller-operator-history
- **operator_operates_mine:** Quikrete-Pensacola → Quikrete Mine; 1998-09-11 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Quikrete Holdings Inc. → Quikrete Mine; 1998-09-11 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Quikrete Holdings Inc. → Quikrete-Pensacola; 1998-09-11 to current/open; source msha-controller-operator-history