# Relationship history for MSHA mine 4202480

Current hierarchy: **Summit Materials LLC → Kilgore Contracting → Stockton 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

- **controller_controls_mine:** Harold  Elam → Stockton Pit; 1950-01-01 to 2011-03-31; source msha-controller-operator-history
- **controller_controls_mine:** Blaine J  Rees → Stockton Pit; 2000-04-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** BJ Rees's Enterprise → Stockton Pit; 2007-07-18 to 2008-06-30; source msha-controller-operator-history
- **controller_controls_operator:** Blaine J  Rees → BJ Rees's Enterprise; 2007-07-18 to 2008-06-30; source msha-controller-operator-history
- **operator_operates_mine:** Peak Construction Material → Stockton Pit; 2008-07-01 to 2010-12-31; source msha-controller-operator-history
- **controller_controls_mine:** R Scott  Reynolds → Stockton Pit; 2008-07-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** R Scott  Reynolds → Peak Construction Material; 2008-07-01 to 2010-12-31; source msha-controller-operator-history
- **operator_operates_mine:** Kilgore Contracting → Stockton Pit; 2011-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Harold  Elam → Kilgore Contracting; 2011-01-01 to 2011-03-31; source msha-controller-operator-history
- **controller_controls_mine:** Summit Materials LLC → Stockton Pit; 2011-04-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Summit Materials LLC → Kilgore Contracting; 2011-04-01 to current/open; source msha-controller-operator-history