# Relationship history for MSHA mine 3000850

Current hierarchy: **Daniel R Gernatt Jr → Dan Gernatt Gravel Products, Inc. → Collins**

- 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:** Dan Gernatt Gravel Products, Inc. → Collins; 1950-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Dan  Gernatt Sr et al → Collins; 1950-01-01 to 2014-05-04; source msha-controller-operator-history
- **controller_controls_operator:** Dan  Gernatt Sr et al → Dan Gernatt Gravel Products, Inc.; 1950-01-01 to 2014-05-04; source msha-controller-operator-history
- **controller_controls_mine:** Daniel R Gernatt Jr et al → Collins; 2014-05-05 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Daniel R Gernatt Jr et al → Dan Gernatt Gravel Products, Inc.; 2014-05-05 to current/open; source msha-controller-operator-history