# Relationship history for MSHA mine 3003090

Current hierarchy: **Colas S A → Barrett Paving Materials Inc → Knapps Quarry**

- 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:** Colas S A → Knapps Quarry; 1979-12-14 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** James D  Uhlinger Sr → Knapps Quarry; 1992-08-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Champion Sand & Gravel Inc → Knapps Quarry; 1993-09-01 to 1994-04-11; source msha-controller-operator-history
- **controller_controls_operator:** James D  Uhlinger Sr → Champion Sand & Gravel Inc; 1993-09-01 to 1994-04-11; source msha-controller-operator-history
- **operator_operates_mine:** Barrett Paving Materials Inc → Knapps Quarry; 1994-04-12 to 2005-10-17; source msha-controller-operator-history
- **controller_controls_operator:** Colas S A → Barrett Paving Materials Inc; 1994-04-12 to 2005-10-17; source msha-controller-operator-history
- **operator_operates_mine:** Acts II Construction Inc → Knapps Quarry; 2005-10-18 to 2006-01-09; source msha-controller-operator-history
- **controller_controls_mine:** Daniel W  Burritt → Knapps Quarry; 2005-10-18 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Daniel W  Burritt → Acts II Construction Inc; 2005-10-18 to 2006-01-09; source msha-controller-operator-history
- **operator_operates_mine:** Barrett Paving Materials Inc → Knapps Quarry; 2006-01-10 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Colas S A → Barrett Paving Materials Inc; 2006-01-10 to current/open; source msha-controller-operator-history