# Relationship history for MSHA mine 4102905

Current hierarchy: **JBM Texas Inc → JBM Project, LLC → Shafter 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

- **controller_controls_mine:** Consolidated Gold Fields Limited → Shafter Mine; 1950-01-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Gold Fields Operating Company → Shafter Mine; 1979-01-01 to 2010-12-31; source msha-controller-operator-history
- **controller_controls_operator:** Consolidated Gold Fields Limited → Gold Fields Operating Company; 1979-01-01 to 2010-12-31; source msha-controller-operator-history
- **operator_operates_mine:** Rio Grande Mining Company → Shafter Mine; 2011-01-01 to 2026-07-08; source msha-controller-operator-history
- **controller_controls_mine:** Aurcana Corporation → Shafter Mine; 2011-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Aurcana Corporation → Rio Grande Mining Company; 2011-01-01 to 2026-07-08; source msha-controller-operator-history
- **operator_operates_mine:** JBM Project, LLC → Shafter Mine; 2026-07-09 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** JBM Texas Inc → Shafter Mine; 2026-07-09 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** JBM Texas Inc → JBM Project, LLC; 2026-07-09 to current/open; source msha-controller-operator-history