# Relationship history for MSHA mine 1201799

Current hierarchy: **Graber Jesse Jr → North Eastern Mining Company Inc → Commercial Pit #1**

- 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:** North Eastern Mining Company Inc → Commercial Pit #1; 1980-07-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Graber Jesse Jr Et Al → Commercial Pit #1; 1980-07-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Graber Jesse Jr Et Al → North Eastern Mining Company Inc; 1980-07-01 to current/open; source msha-controller-operator-history