# Relationship history for MSHA mine 3002847

Current hierarchy: **Daniel R Gernatt Jr → Gernatt Asphalt Products, Inc. → Great Valley**

- 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:** Dan  Gernatt Sr et al → Great Valley; 1979-11-01 to 2014-05-04; source msha-controller-operator-history
- **operator_operates_mine:** Krause Construction Inc → Great Valley; 1988-06-01 to 1994-02-28; source msha-controller-operator-history
- **controller_controls_mine:** Howard  Krause → Great Valley; 1988-06-01 to 1994-02-28; source msha-controller-operator-history
- **controller_controls_operator:** Howard  Krause → Krause Construction Inc; 1988-06-01 to 1994-02-28; source msha-controller-operator-history
- **operator_operates_mine:** Gernatt Asphalt Products, Inc. → Great Valley; 1994-03-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Dan  Gernatt Sr et al → Gernatt Asphalt Products, Inc.; 1994-03-01 to 2014-05-04; source msha-controller-operator-history
- **controller_controls_mine:** Daniel R Gernatt Jr et al → Great Valley; 2014-05-05 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Daniel R Gernatt Jr et al → Gernatt Asphalt Products, Inc.; 2014-05-05 to current/open; source msha-controller-operator-history