# Relationship history for MSHA mine 3102170

Current hierarchy: **Carol S  Good → Balsam Stone Company → BALSAM YARD**

- 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:** Balsam Stone Company → BALSAM YARD; 2001-02-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Carol S  Good → BALSAM YARD; 2001-02-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Carol S  Good → Balsam Stone Company; 2001-02-01 to current/open; source msha-controller-operator-history