# Relationship history for MSHA mine 0101294

Current hierarchy: **Riley Dale & Dwight → Riley Brothers Oil Field Construction → Riley 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: 2026-10-17T05:35:58.500035+00:00

## Valid-time edges

- **operator_operates_mine:** Earnest & Son Sand & Gravel → Riley Pit; 1950-01-01 to 1981-05-05; source msha-controller-operator-history
- **controller_controls_mine:** Earnest James Et Al → Riley Pit; 1950-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Earnest James Et Al → Earnest & Son Sand & Gravel; 1950-01-01 to 1981-05-05; source msha-controller-operator-history
- **operator_operates_mine:** Riley Brothers Oil Field Construction → Riley Pit; 1981-05-06 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Riley Dale & Dwight → Riley Pit; 1981-05-06 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Riley Dale & Dwight → Riley Brothers Oil Field Construction; 1981-05-06 to current/open; source msha-controller-operator-history