# Relationship history for MSHA mine 1519984

Current hierarchy: **Brandon  Perkins; Elmer  Perkins → BRANDON'S EXCAVATING LLC → CEMETERY ROAD MINE 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: 2026-10-17T05:35:58.500035+00:00

## Valid-time edges

- **operator_operates_mine:** BRANDON'S EXCAVATING LLC → CEMETERY ROAD MINE 1; 2025-10-10 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Elmer  Perkins et al → CEMETERY ROAD MINE 1; 2025-10-10 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Elmer  Perkins et al → BRANDON'S EXCAVATING LLC; 2025-10-10 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Brandon  Perkins et al → BRANDON'S EXCAVATING LLC; 2025-10-10 to current/open; source msha-controller-operator-history