# Relationship history for MSHA mine 4101500

Current hierarchy: **Fandrich J W → Machaca Resources Inc → Paisano Mines**

- 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:** D & F Minerals Inc → Paisano Mines; 1950-01-01 to 1985-02-28; source msha-controller-operator-history
- **controller_controls_mine:** Daugherty Frank W → Paisano Mines; 1950-01-01 to 1985-02-28; source msha-controller-operator-history
- **controller_controls_operator:** Daugherty Frank W → D & F Minerals Inc; 1950-01-01 to 1985-02-28; source msha-controller-operator-history
- **operator_operates_mine:** Machaca Resources Inc → Paisano Mines; 1985-03-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Fandrich J W → Paisano Mines; 1985-03-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Fandrich J W → Machaca Resources Inc; 1985-03-01 to current/open; source msha-controller-operator-history