# Relationship history for MSHA mine 3000953

Current hierarchy: **Daniel R Gernatt Jr → Gernatt Asphalt Products Inc → Gowanda**

- 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:** Ray Vogtli & Sons Inc → Gowanda; 1950-01-01 to 1985-12-31; source msha-controller-operator-history
- **controller_controls_mine:** Donald  Vogtli → Gowanda; 1950-01-01 to 1985-12-31; source msha-controller-operator-history
- **controller_controls_operator:** Donald  Vogtli → Ray Vogtli & Sons Inc; 1950-01-01 to 1985-12-31; source msha-controller-operator-history
- **controller_controls_mine:** Dan  Gernatt Sr et al → Gowanda; 1979-11-01 to 2014-05-04; source msha-controller-operator-history
- **operator_operates_mine:** Gernatt Asphalt Products Inc → Gowanda; 1986-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Dan  Gernatt Sr et al → Gernatt Asphalt Products Inc; 1986-01-01 to 2014-05-04; source msha-controller-operator-history
- **controller_controls_mine:** Daniel R Gernatt Jr et al → Gowanda; 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