# Relationship history for MSHA mine 4003282

Current hierarchy: **Anthony B  Garrison; Roy  Potter → Lewis Chapel Stone → Dayton Quarry**

- 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:** Manuel D  Montes et al → Dayton Quarry; 2004-04-05 to 2009-01-26; source msha-controller-operator-history
- **operator_operates_mine:** Lewis Chapel Stone → Dayton Quarry; 2006-09-21 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Manuel D  Montes et al → Lewis Chapel Stone; 2006-09-21 to 2009-01-26; source msha-controller-operator-history
- **controller_controls_mine:** Roy  Potter et al → Dayton Quarry; 2009-01-27 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Roy  Potter et al → Lewis Chapel Stone; 2009-01-27 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Anthony B  Garrison et al → Lewis Chapel Stone; 2009-01-27 to current/open; source msha-controller-operator-history