# Relationship history for MSHA mine 0505194

Current hierarchy: **Chris  Leone; Chance  Brown → J-2 Contracting Co. → Sweet Valley Reservoir Complex**

- 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

- **controller_controls_mine:** John  Leone et al → Sweet Valley Reservoir Complex; 2007-01-11 to 2015-01-07; source msha-controller-operator-history
- **controller_controls_mine:** Chris  Leone et al → Sweet Valley Reservoir Complex; 2015-01-08 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** J-2 Contracting Co. → Sweet Valley Reservoir Complex; 2024-07-19 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** John  Leone et al → J-2 Contracting Co.; 2024-07-19 to 2015-01-07; source msha-controller-operator-history
- **controller_controls_operator:** Chris  Leone et al → J-2 Contracting Co.; 2024-07-19 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Chance  Brown et al → J-2 Contracting Co.; 2024-07-19 to current/open; source msha-controller-operator-history