# Relationship history for MSHA mine 4104067

Current hierarchy: **James M  Boney → Matbon Inc → MATBON INC I30 PLANT**

- Valid-time bounds: inclusive, date granularity
- Null end: open-ended in the upstream history row; not independent proof of present control
- Transaction-time observation: 2026-10-17T05:35:58.500035+00:00

## Valid-time edges

- **controller_controls_mine:** James M  Boney → MATBON INC I30 PLANT; 1997-06-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Matbon Inc → MATBON INC I30 PLANT; 1999-03-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** James M  Boney → Matbon Inc; 1999-03-01 to current/open; source msha-controller-operator-history