# Relationship history for MSHA mine 1100393

Current hierarchy: **Robert A  Egert → Renner Quarries Ltd → Eller 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:** Robert A  Egert et al → Eller Quarry; 1950-01-01 to 2024-07-31; source msha-controller-operator-history
- **operator_operates_mine:** Chuck Eller Trucking → Eller Quarry; 1950-01-01 to 1985-03-07; source msha-controller-operator-history
- **controller_controls_mine:** Eller Charles → Eller Quarry; 1950-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Eller Charles → Chuck Eller Trucking; 1950-01-01 to 1985-03-07; source msha-controller-operator-history
- **operator_operates_mine:** Renner Quarries Ltd → Eller Quarry; 1985-03-08 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Robert A  Egert et al → Renner Quarries Ltd; 1985-03-08 to 2024-07-31; source msha-controller-operator-history
- **controller_controls_operator:** Gary L  Egert et al → Renner Quarries Ltd; 1985-03-08 to 2024-07-31; source msha-controller-operator-history
- **controller_controls_mine:** Robert A  Egert → Eller Quarry; 2024-08-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Robert A  Egert → Renner Quarries Ltd; 2024-08-01 to current/open; source msha-controller-operator-history