# Relationship history for MSHA mine 2003167

Current hierarchy: **Duane D  Teller → Teller Excavating Inc → MAPLEVIEW**

- 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:** Teller Excavating Inc → MAPLEVIEW; 2000-08-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Duane D  Teller → MAPLEVIEW; 2000-08-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Duane D  Teller → Teller Excavating Inc; 2000-08-01 to current/open; source msha-controller-operator-history