# Relationship history for MSHA mine 2601654

Current hierarchy: **Dowdy Guy W → Dow James Minerals Inc → Dry Gulch-Spring Valley 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: 2026-10-13T11:19:05.459773+00:00

## Valid-time edges

- **operator_operates_mine:** Atolia Minerals Inc → Dry Gulch-Spring Valley Placer; 1980-07-01 to 1982-02-09; source msha-controller-operator-history
- **controller_controls_mine:** Jacobs Joseph → Dry Gulch-Spring Valley Placer; 1980-07-01 to 1982-11-16; source msha-controller-operator-history
- **controller_controls_operator:** Jacobs Joseph → Atolia Minerals Inc; 1980-07-01 to 1982-02-09; source msha-controller-operator-history
- **operator_operates_mine:** Dow James Minerals Inc → Dry Gulch-Spring Valley Placer; 1982-02-10 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Dowdy Guy W → Dry Gulch-Spring Valley Placer; 1982-02-10 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Dowdy Guy W → Dow James Minerals Inc; 1982-02-10 to current/open; source msha-controller-operator-history