# Relationship history for MSHA mine 0101935

Current hierarchy: **Great Northern Nekoosa Inc → Coalite Inc → Glen Allen 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:** Great Northern Nekoosa Inc → Glen Allen Plant; 1950-01-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Coalite Inc → Glen Allen Plant; 1978-09-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Great Northern Nekoosa Inc → Coalite Inc; 1978-09-01 to current/open; source msha-controller-operator-history