# Relationship history for MSHA mine 0504929

Current hierarchy: **Nevin  Bannister → Oilfield Water Logistics → OWL Western Gravel & Disposal**

- Valid-time bounds: inclusive, date granularity
- Null end: open-ended in the upstream history row; not independent proof of present control
- Transaction-time observation: 2026-10-17T05:35:58.500035+00:00

## Valid-time edges

- **operator_operates_mine:** Western Gravel LLC → OWL Western Gravel & Disposal; 2009-04-06 to 2014-10-20; source msha-controller-operator-history
- **controller_controls_mine:** Benton D  Jensen → OWL Western Gravel & Disposal; 2009-04-06 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Benton D  Jensen → Western Gravel LLC; 2009-04-06 to 2014-10-20; source msha-controller-operator-history
- **operator_operates_mine:** Oilfield Water Logistics → OWL Western Gravel & Disposal; 2014-10-21 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Nevin  Bannister → OWL Western Gravel & Disposal; 2014-10-21 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Nevin  Bannister → Oilfield Water Logistics; 2014-10-21 to current/open; source msha-controller-operator-history