# Relationship history for MSHA mine 4609104

Current hierarchy: **Timothy  Lester → Richmond Works Inc → Still Run No. 10**

- 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

- **controller_controls_mine:** Timothy  Lester → Still Run No. 10; 2000-12-21 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Richmond Works Inc → Still Run No. 10; 2005-05-12 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Timothy  Lester → Richmond Works Inc; 2005-05-12 to current/open; source msha-controller-operator-history