# Relationship history for MSHA mine 3610086

Current hierarchy: **John L  Foieri; Matthew A  Guarna → Last Time Coal Co → 5 Vein Strip**

- 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:** Matthew A  Guarna et al → 5 Vein Strip; 2010-10-06 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Last Time Coal Co → 5 Vein Strip; 2013-09-30 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Matthew A  Guarna et al → Last Time Coal Co; 2013-09-30 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** John L  Foieri et al → Last Time Coal Co; 2013-09-30 to current/open; source msha-controller-operator-history