# Relationship history for MSHA mine 2700390

Current hierarchy: **Robert W  Frizzell; Renee J  Frizzell → INTERSTATE SOILS LLC → INTERSTATE SOILS LLC**

- 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:** INTERSTATE SOILS LLC → INTERSTATE SOILS LLC; 2004-06-14 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Renee J  Frizzell et al → INTERSTATE SOILS LLC; 2004-06-14 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Renee J  Frizzell et al → INTERSTATE SOILS LLC; 2004-06-14 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Robert W  Frizzell et al → INTERSTATE SOILS LLC; 2004-06-14 to current/open; source msha-controller-operator-history