# Relationship history for MSHA mine 1001570

Current hierarchy: **Farr Walt-Oscar Bluth → Walt Farr & Associates → Jordan Creek Placer**

- 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:** Roeder Mining Inc → Jordan Creek Placer; 1982-06-01 to 1984-07-17; source msha-controller-operator-history
- **controller_controls_mine:** Roeder John → Jordan Creek Placer; 1982-06-01 to 1993-09-29; source msha-controller-operator-history
- **controller_controls_operator:** Roeder John → Roeder Mining Inc; 1982-06-01 to 1984-07-17; source msha-controller-operator-history
- **operator_operates_mine:** Walt Farr & Associates → Jordan Creek Placer; 1984-07-18 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Farr Walt-Oscar Bluth Et Al → Jordan Creek Placer; 1984-07-18 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Farr Walt-Oscar Bluth Et Al → Walt Farr & Associates; 1984-07-18 to current/open; source msha-controller-operator-history