# Relationship history for MSHA mine 4104643

Current hierarchy: **Justin L.  Russell; Robert  Mejia → Millsap Materials LLC → Pit 2**

- 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:** Millsap Materials LLC → Pit 2; 2007-02-08 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Robert  Mejia et al → Pit 2; 2007-05-03 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Robert  Mejia et al → Millsap Materials LLC; 2007-05-03 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Justin L.  Russell et al → Millsap Materials LLC; 2007-05-03 to current/open; source msha-controller-operator-history