# Relationship history for MSHA mine 5000473

Current hierarchy: **Phil  Godfrey → Red Samm Construction Inc → Horns Pit**

- 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:** Phil  Godfrey → Horns Pit; 1950-01-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Helin Horn & Shanks Inc → Horns Pit; 1950-01-01 to 1980-04-30; source msha-controller-operator-history
- **controller_controls_mine:** Horn Tom → Horns Pit; 1950-01-01 to 1980-04-30; source msha-controller-operator-history
- **controller_controls_operator:** Horn Tom → Helin Horn & Shanks Inc; 1950-01-01 to 1980-04-30; source msha-controller-operator-history
- **operator_operates_mine:** Phil Godfrey Redi-Mix Sand & Gravel → Horns Pit; 1980-05-01 to 1984-06-10; source msha-controller-operator-history
- **controller_controls_mine:** Phil  Godfrey → Horns Pit; 1980-05-01 to 1984-06-10; source msha-controller-operator-history
- **controller_controls_operator:** Phil  Godfrey → Phil Godfrey Redi-Mix Sand & Gravel; 1980-05-01 to 1984-06-10; source msha-controller-operator-history
- **operator_operates_mine:** Gastineau Sand & Gravel → Horns Pit; 1984-06-11 to 1990-08-29; source msha-controller-operator-history
- **controller_controls_mine:** Godfrey Doug & Craig Morrison → Horns Pit; 1984-06-11 to 1990-08-29; source msha-controller-operator-history
- **controller_controls_operator:** Godfrey Doug & Craig Morrison → Gastineau Sand & Gravel; 1984-06-11 to 1990-08-29; source msha-controller-operator-history
- **operator_operates_mine:** Red Samm Construction Inc → Horns Pit; 1990-08-30 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Phil  Godfrey → Red Samm Construction Inc; 1990-08-30 to current/open; source msha-controller-operator-history