# Relationship history for MSHA mine 3610196

Current hierarchy: **Farmington Township → Farmington Twp → Reed ScreenAll-Model RD-40 256387**

- 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

- **operator_operates_mine:** Farmington Twp → Reed ScreenAll-Model RD-40 256387; 2016-10-04 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Farmington Township → Reed ScreenAll-Model RD-40 256387; 2016-10-04 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Farmington Township → Farmington Twp; 2016-10-04 to current/open; source msha-controller-operator-history