# Relationship history for MSHA mine 2401578

Current hierarchy: **Harrison Ernest W → Patrick Harrison Constructors Inc → UNCLE SAM**

- 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:** Mortensen Steve → UNCLE SAM; 1980-05-01 to 1984-08-26; source msha-controller-operator-history
- **operator_operates_mine:** Alder Gulch Trucking Company → UNCLE SAM; 1980-08-01 to 1982-12-27; source msha-controller-operator-history
- **controller_controls_mine:** Scheitlin Edward E → UNCLE SAM; 1980-08-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Scheitlin Edward E → Alder Gulch Trucking Company; 1980-08-01 to 1982-12-27; source msha-controller-operator-history
- **operator_operates_mine:** Buckeye Mines Inc → UNCLE SAM; 1982-12-28 to 1984-08-26; source msha-controller-operator-history
- **controller_controls_operator:** Mortensen Steve → Buckeye Mines Inc; 1982-12-28 to 1984-08-26; source msha-controller-operator-history
- **controller_controls_mine:** Taylor Darryl → UNCLE SAM; 1984-07-13 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Taylor Mining Company → UNCLE SAM; 1984-08-27 to 1986-08-14; source msha-controller-operator-history
- **controller_controls_operator:** Taylor Darryl → Taylor Mining Company; 1984-08-27 to 1986-08-14; source msha-controller-operator-history
- **operator_operates_mine:** Uncle Sam Mining Inc (U S M I) → UNCLE SAM; 1986-08-15 to 1997-08-20; source msha-controller-operator-history
- **controller_controls_mine:** Bonnet Fred → UNCLE SAM; 1986-08-15 to 1997-08-20; source msha-controller-operator-history
- **controller_controls_operator:** Bonnet Fred → Uncle Sam Mining Inc (U S M I); 1986-08-15 to 1997-08-20; source msha-controller-operator-history
- **controller_controls_mine:** Harrison Ernest W → UNCLE SAM; 1994-01-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Patrick Harrison Constructors Inc → UNCLE SAM; 1997-08-21 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Harrison Ernest W → Patrick Harrison Constructors Inc; 1997-08-21 to current/open; source msha-controller-operator-history