# Relationship history for MSHA mine 0404287

Current hierarchy: **Reno Rock & Asphalt Company → Yuba River Sand & Gravel → Dantoni Road 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: 2026-10-13T11:19:05.459773+00:00

## Valid-time edges

- **controller_controls_mine:** Noble Debs  Plant → Dantoni Road Pit; 1950-01-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Trinco Inc → Dantoni Road Pit; 1979-01-01 to 1987-02-28; source msha-controller-operator-history
- **controller_controls_operator:** Noble Debs  Plant → Trinco Inc; 1979-01-01 to 1987-02-28; source msha-controller-operator-history
- **operator_operates_mine:** Yuba River Sand & Gravel Inc → Dantoni Road Pit; 1987-03-01 to 1992-11-03; source msha-controller-operator-history
- **controller_controls_mine:** W (Wallace) Jaxon  Baker → Dantoni Road Pit; 1987-03-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** W (Wallace) Jaxon  Baker → Yuba River Sand & Gravel Inc; 1987-03-01 to 1992-11-03; source msha-controller-operator-history
- **operator_operates_mine:** Yuba River Sand & Gravel → Dantoni Road Pit; 1992-11-04 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Reno Rock & Asphalt Company → Dantoni Road Pit; 1992-11-04 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Reno Rock & Asphalt Company → Yuba River Sand & Gravel; 1992-11-04 to current/open; source msha-controller-operator-history