# Relationship history for MSHA mine 0404004

Current hierarchy: **Cherokee Dev Corp & Gold Star Exploration → Cherokee Joint Venture → Cherokee 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: 2026-10-17T05:35:58.500035+00:00

## Valid-time edges

- **operator_operates_mine:** Spring Valley Minerals Inc → Cherokee Mine; 1981-04-01 to 1989-08-31; source msha-controller-operator-history
- **controller_controls_mine:** Adams R W → Cherokee Mine; 1981-04-01 to 1989-08-31; source msha-controller-operator-history
- **controller_controls_operator:** Adams R W → Spring Valley Minerals Inc; 1981-04-01 to 1989-08-31; source msha-controller-operator-history
- **operator_operates_mine:** Cherokee Joint Venture → Cherokee Mine; 1989-09-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Cherokee Dev Corp & Gold Star Exploration → Cherokee Mine; 1989-09-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Cherokee Dev Corp & Gold Star Exploration → Cherokee Joint Venture; 1989-09-01 to current/open; source msha-controller-operator-history