# Relationship history for MSHA mine 0300610

Current hierarchy: **Atlas Asphalt Corp → White River Materials Inc → White River Materials Mt. Home 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

- **operator_operates_mine:** Twin Lakes Quarrys Inc → White River Materials Mt. Home Quarry; 1950-01-01 to 2020-12-31; source msha-controller-operator-history
- **controller_controls_mine:** Paul  King → White River Materials Mt. Home Quarry; 1950-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Paul  King → Twin Lakes Quarrys Inc; 1950-01-01 to 2020-12-31; source msha-controller-operator-history
- **controller_controls_mine:** Atlas Asphalt Corp → White River Materials Mt. Home Quarry; 1993-10-14 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** White River Materials Inc → White River Materials Mt. Home Quarry; 2021-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Atlas Asphalt Corp → White River Materials Inc; 2021-01-01 to current/open; source msha-controller-operator-history