# Relationship history for MSHA mine 3304555

Current hierarchy: **Gerald L.  Broshear → Broshear Contractors, Inc. → Ross Plant**

- 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:** Broshear Contractors, Inc. → Ross Plant; 2005-11-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Gerald L.  Broshear → Ross Plant; 2005-11-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Gerald L.  Broshear → Broshear Contractors, Inc.; 2005-11-01 to current/open; source msha-controller-operator-history