# Relationship history for MSHA mine 4104917

Current hierarchy: **James  McDonald; Paula  McDonald → Dead River Ranch Materials. LLC → Riesel Sand & Gravel Plant #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: 2026-10-18T09:31:49.615908+00:00

## Valid-time edges

- **operator_operates_mine:** Dead River Ranch Materials. LLC → Riesel Sand & Gravel Plant #1; 2011-11-19 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** James  McDonald et al → Riesel Sand & Gravel Plant #1; 2011-11-19 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** James  McDonald et al → Dead River Ranch Materials. LLC; 2011-11-19 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Paula  McDonald et al → Dead River Ranch Materials. LLC; 2011-11-19 to current/open; source msha-controller-operator-history