# Relationship history for MSHA mine 4001808

Current hierarchy: **Walt John Fred Iii → A & W Auger Corp → A&W Auger Corp No 1 Surface**

- 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:** Walt John Fred Iii → A&W Auger Corp No 1 Surface; 1950-01-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** P & N Coal Company → A&W Auger Corp No 1 Surface; 1975-08-01 to 1980-07-15; source msha-controller-operator-history
- **controller_controls_mine:** Phillips Homer & Elsie → A&W Auger Corp No 1 Surface; 1975-08-01 to 1983-01-11; source msha-controller-operator-history
- **controller_controls_operator:** Phillips Homer & Elsie → P & N Coal Company; 1975-08-01 to 1980-07-15; source msha-controller-operator-history
- **operator_operates_mine:** Mineral Resources Inc → A&W Auger Corp No 1 Surface; 1980-07-16 to 1981-06-01; source msha-controller-operator-history
- **controller_controls_mine:** Outland Charles → A&W Auger Corp No 1 Surface; 1980-07-16 to 1981-06-01; source msha-controller-operator-history
- **controller_controls_operator:** Outland Charles → Mineral Resources Inc; 1980-07-16 to 1981-06-01; source msha-controller-operator-history
- **operator_operates_mine:** P & N Coal Company → A&W Auger Corp No 1 Surface; 1981-06-02 to 1983-01-11; source msha-controller-operator-history
- **controller_controls_operator:** Phillips Homer & Elsie → P & N Coal Company; 1981-06-02 to 1983-01-11; source msha-controller-operator-history
- **operator_operates_mine:** A & W Auger Corp → A&W Auger Corp No 1 Surface; 1983-01-12 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Walt John Fred Iii → A & W Auger Corp; 1983-01-12 to current/open; source msha-controller-operator-history