# Relationship history for MSHA mine 0504655

Current hierarchy: **Kent  Cotten → All American Resources LLC → Austin Pit**

- 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:** Judy  DeVincentis et al → Austin Pit; 1994-05-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Western Gravel Inc → Austin Pit; 1999-07-01 to 2009-01-31; source msha-controller-operator-history
- **controller_controls_operator:** Judy  DeVincentis et al → Western Gravel Inc; 1999-07-01 to 2009-01-31; source msha-controller-operator-history
- **operator_operates_mine:** All American Resources LLC → Austin Pit; 2009-02-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Kent  Cotten → Austin Pit; 2009-02-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Kent  Cotten → All American Resources LLC; 2009-02-01 to current/open; source msha-controller-operator-history