# Relationship history for MSHA mine 0504094

Current hierarchy: **Henry  Braly → Frontier Materials → Goosehaven Ii**

- 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:** Henry  Braly → Goosehaven Ii; 1950-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Tiefel Douglas A → Goosehaven Ii; 1985-07-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Goose Haven Sand & Gravel Inc → Goosehaven Ii; 1985-10-01 to 1986-04-30; source msha-controller-operator-history
- **controller_controls_operator:** Tiefel Douglas A → Goose Haven Sand & Gravel Inc; 1985-10-01 to 1986-04-30; source msha-controller-operator-history
- **operator_operates_mine:** Frontier Materials → Goosehaven Ii; 1986-05-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Henry  Braly → Frontier Materials; 1986-05-01 to current/open; source msha-controller-operator-history