# Relationship history for MSHA mine 0801235

Current hierarchy: **Gruber Dan → Gulfstream Mining & Materials Inc → GULFSTREAM MINING&MINERALS 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: 2026-10-13T11:19:05.459773+00:00

## Valid-time edges

- **operator_operates_mine:** Gulfstream Mining & Materials Inc → GULFSTREAM MINING&MINERALS INC.; 1995-09-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Gruber Dan → GULFSTREAM MINING&MINERALS INC.; 1995-09-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Gruber Dan → Gulfstream Mining & Materials Inc; 1995-09-01 to current/open; source msha-controller-operator-history