# Relationship history for MSHA mine 4105574

Current hierarchy: **Barbwire Oil & Gas LLC → Brazos Bend Materials, LLC → Ratliff Sand Mine**

- 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:** J & J Sand and Gravel LLC → Ratliff Sand Mine; 2021-07-28 to 2021-11-03; source msha-controller-operator-history
- **controller_controls_mine:** Joe  Sonntag et al → Ratliff Sand Mine; 2021-07-28 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Joe  Sonntag et al → J & J Sand and Gravel LLC; 2021-07-28 to 2021-11-03; source msha-controller-operator-history
- **controller_controls_operator:** James W  Gosdin et al → J & J Sand and Gravel LLC; 2021-07-28 to 2021-11-03; source msha-controller-operator-history
- **operator_operates_mine:** Brazos Bend Materials, LLC → Ratliff Sand Mine; 2021-11-04 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Barbwire Oil & Gas LLC et al → Ratliff Sand Mine; 2021-11-04 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Barbwire Oil & Gas LLC et al → Brazos Bend Materials, LLC; 2021-11-04 to current/open; source msha-controller-operator-history