# Relationship history for MSHA mine 0503760

Current hierarchy: **Stephen C  Fearn → SILVER WING CO., INC. → PRIDE OF THE WEST ML SILVER WING CO. INC**

- Valid-time bounds: inclusive, date granularity
- Null end: open-ended in the upstream history row; not independent proof of present control
- Transaction-time observation: 2026-10-18T09:31:49.615908+00:00

## Valid-time edges

- **controller_controls_mine:** Peck Richard F → PRIDE OF THE WEST ML SILVER WING CO. INC; 1981-08-12 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** P & G Mining Inc → PRIDE OF THE WEST ML SILVER WING CO. INC; 1982-01-01 to 1994-10-13; source msha-controller-operator-history
- **controller_controls_operator:** Peck Richard F → P & G Mining Inc; 1982-01-01 to 1994-10-13; source msha-controller-operator-history
- **operator_operates_mine:** P & G Milling & Mining Corp → PRIDE OF THE WEST ML SILVER WING CO. INC; 1994-10-14 to 1996-07-10; source msha-controller-operator-history
- **controller_controls_mine:** Baldwin Joe → PRIDE OF THE WEST ML SILVER WING CO. INC; 1994-10-14 to 1996-07-10; source msha-controller-operator-history
- **controller_controls_operator:** Baldwin Joe → P & G Milling & Mining Corp; 1994-10-14 to 1996-07-10; source msha-controller-operator-history
- **controller_controls_mine:** Ponderosa Trust → PRIDE OF THE WEST ML SILVER WING CO. INC; 1996-05-11 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** M G M-Maple Grove Mill/Mine → PRIDE OF THE WEST ML SILVER WING CO. INC; 1996-07-11 to 2001-06-07; source msha-controller-operator-history
- **controller_controls_operator:** Ponderosa Trust → M G M-Maple Grove Mill/Mine; 1996-07-11 to 2001-06-07; source msha-controller-operator-history
- **operator_operates_mine:** SILVER WING CO., INC. → PRIDE OF THE WEST ML SILVER WING CO. INC; 2001-06-08 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Stephen C  Fearn → PRIDE OF THE WEST ML SILVER WING CO. INC; 2001-06-08 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Stephen C  Fearn → SILVER WING CO., INC.; 2001-06-08 to current/open; source msha-controller-operator-history