# Relationship history for MSHA mine 1800771

Current hierarchy: **James  Richards III → Jimmy Richards & Sons Excavating Inc → Route 6 Pit**

- 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:** Jimmy Richards & Sons Excavating Inc → Route 6 Pit; 2006-01-19 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** James  Richards III → Route 6 Pit; 2006-01-19 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** James  Richards III → Jimmy Richards & Sons Excavating Inc; 2006-01-19 to current/open; source msha-controller-operator-history