# Relationship history for MSHA mine 0405128

Current hierarchy: **James P  Sandoval → Ventura County Rock Corp → Ventura County Rock Corporation**

- 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

- **operator_operates_mine:** Gofourth Development Company Inc → Ventura County Rock Corporation; 1991-01-01 to 1991-09-14; source msha-controller-operator-history
- **controller_controls_mine:** Gofourth Charles D → Ventura County Rock Corporation; 1991-01-01 to 1991-09-14; source msha-controller-operator-history
- **controller_controls_operator:** Gofourth Charles D → Gofourth Development Company Inc; 1991-01-01 to 1991-09-14; source msha-controller-operator-history
- **operator_operates_mine:** Santa Paula Rock Company → Ventura County Rock Corporation; 1991-09-15 to 1992-03-31; source msha-controller-operator-history
- **controller_controls_mine:** Smith Terry Sr Et Al → Ventura County Rock Corporation; 1991-09-15 to 1992-03-31; source msha-controller-operator-history
- **controller_controls_operator:** Smith Terry Sr Et Al → Santa Paula Rock Company; 1991-09-15 to 1992-03-31; source msha-controller-operator-history
- **operator_operates_mine:** Ventura County Rock Corp → Ventura County Rock Corporation; 1992-04-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** James P  Sandoval → Ventura County Rock Corporation; 1992-04-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** James P  Sandoval → Ventura County Rock Corp; 1992-04-01 to current/open; source msha-controller-operator-history