# Relationship history for MSHA mine 2901589

Current hierarchy: **Charles E  Hamilton; Carroll  Hamilton → James Hamilton Construction Company → St Anthony Mine Open Pit Stripping**

- 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

- **controller_controls_mine:** Charles E  Hamilton  et al → St Anthony Mine Open Pit Stripping; 1950-01-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Farris Mines Inc → St Anthony Mine Open Pit Stripping; 1950-01-01 to 1979-05-14; source msha-controller-operator-history
- **controller_controls_mine:** Farris Jerry F & Merle Burns → St Anthony Mine Open Pit Stripping; 1950-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Farris Jerry F & Merle Burns → Farris Mines Inc; 1950-01-01 to 1979-05-14; source msha-controller-operator-history
- **operator_operates_mine:** James Hamilton Construction Company → St Anthony Mine Open Pit Stripping; 1979-05-15 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Charles E  Hamilton  et al → James Hamilton Construction Company; 1979-05-15 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Carroll  Hamilton  et al → James Hamilton Construction Company; 1979-05-15 to current/open; source msha-controller-operator-history