# Relationship history for MSHA mine 3610209

Current hierarchy: **John A  Joseph → JOSEPH CONTRACTING → BRYNER LNC SITE**

- 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:** Joseph Contracting → BRYNER LNC SITE; 2017-02-09 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** John A  Joseph → BRYNER LNC SITE; 2017-02-09 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** John A  Joseph → Joseph Contracting; 2017-02-09 to current/open; source msha-controller-operator-history