# Relationship history for MSHA mine 0405173

Current hierarchy: **Granite Construction Inc → Granite Construction Company → Terra Bella 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: 2026-10-17T05:35:58.500035+00:00

## Valid-time edges

- **controller_controls_mine:** Granite Construction Inc → Terra Bella Quarry; 1950-01-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Porterville Ready Mix Inc → Terra Bella Quarry; 1992-01-01 to 1993-10-25; source msha-controller-operator-history
- **controller_controls_mine:** Bill Ray  Jones → Terra Bella Quarry; 1992-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Bill Ray  Jones → Porterville Ready Mix Inc; 1992-01-01 to 1993-10-25; source msha-controller-operator-history
- **operator_operates_mine:** Bluestone Aggregate-Plant 2 → Terra Bella Quarry; 1993-10-26 to 1996-03-24; source msha-controller-operator-history
- **controller_controls_mine:** Jim  Uny → Terra Bella Quarry; 1993-10-26 to 1996-03-24; source msha-controller-operator-history
- **controller_controls_operator:** Jim  Uny → Bluestone Aggregate-Plant 2; 1993-10-26 to 1996-03-24; source msha-controller-operator-history
- **operator_operates_mine:** California Iss Inc → Terra Bella Quarry; 1996-03-25 to 2009-04-27; source msha-controller-operator-history
- **controller_controls_mine:** Granite Construction Inc → Terra Bella Quarry; 1996-03-25 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Granite Construction Inc → California Iss Inc; 1996-03-25 to 2009-04-27; source msha-controller-operator-history
- **operator_operates_mine:** Granite Construction Company → Terra Bella Quarry; 2009-04-28 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Granite Construction Inc → Granite Construction Company; 2009-04-28 to current/open; source msha-controller-operator-history