# Relationship history for MSHA mine 3607488

Current hierarchy: **Stott James M → Northern Counties Coal Company Inc → Green Glen Operation**

- 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:** Stott James M → Green Glen Operation; 1981-02-24 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Northern Counties Coal Company Inc → Green Glen Operation; 1983-08-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Stott James M → Northern Counties Coal Company Inc; 1983-08-01 to current/open; source msha-controller-operator-history