# Relationship history for MSHA mine 0202089

Current hierarchy: **Thomas W  Freeman; Harold J  Seidemann Jr → American International Minerals Corp → Golden Gem**

- 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:** Hansen Wilbur → Golden Gem; 1980-06-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Gold Standard Mines Inc → Golden Gem; 1982-02-01 to 1983-03-02; source msha-controller-operator-history
- **controller_controls_operator:** Hansen Wilbur → Gold Standard Mines Inc; 1982-02-01 to 1983-03-02; source msha-controller-operator-history
- **operator_operates_mine:** American International Minerals Corp → Golden Gem; 1983-03-03 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Harold J  Seidemann Jr et al → Golden Gem; 1983-03-03 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Harold J  Seidemann Jr et al → American International Minerals Corp; 1983-03-03 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Thomas W  Freeman et al → American International Minerals Corp; 1983-03-03 to current/open; source msha-controller-operator-history