# Relationship history for MSHA mine 3000773

Current hierarchy: **Donald  Larned; Thomas  Larned; Antonio  Larned → WILLIAM M LARNED & SONS INC → YARD CRUSHER**

- 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:** William M Larned & Sons Inc → YARD CRUSHER; 1950-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Timothy S  Larned et al → YARD CRUSHER; 1950-01-01 to 2025-09-09; source msha-controller-operator-history
- **controller_controls_operator:** Timothy S  Larned et al → William M Larned & Sons Inc; 1950-01-01 to 2025-09-09; source msha-controller-operator-history
- **controller_controls_mine:** Donald  Larned et al → YARD CRUSHER; 2025-09-10 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Donald  Larned et al → William M Larned & Sons Inc; 2025-09-10 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Antonio  Larned et al → William M Larned & Sons Inc; 2025-09-10 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Thomas  Larned et al → William M Larned & Sons Inc; 2025-09-10 to current/open; source msha-controller-operator-history