# Relationship history for MSHA mine 1519634

Current hierarchy: **Jason S  Epling → ACR Coal, LLC → #1**

- 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:** ACR Coal, LLC → #1; 2011-10-31 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Jason S  Epling et al → #1; 2011-10-31 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Jason S  Epling et al → ACR Coal, LLC; 2011-10-31 to current/open; source msha-controller-operator-history