# Relationship history for MSHA mine 0801200

Current hierarchy: **Amable  Falero; Jose M  Rodriguez → Sunshine Rock Company Inc → West Kendall Best**

- 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:** Amable  Falero et al → West Kendall Best; 1986-04-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Sunshine Rock Company Inc → West Kendall Best; 1992-08-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Amable  Falero et al → Sunshine Rock Company Inc; 1992-08-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Jose M  Rodriguez et al → Sunshine Rock Company Inc; 1992-08-01 to current/open; source msha-controller-operator-history