# Relationship history for MSHA mine 1514021

Current hierarchy: **North American Resources Corp → North American Fuels Corp → Job No 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: 2026-10-17T05:35:58.500035+00:00

## Valid-time edges

- **operator_operates_mine:** Cassie Coal Inc → Job No 1; 1983-04-01 to 1984-02-16; source msha-controller-operator-history
- **controller_controls_mine:** Davis James O Jr & Pat Mc Guire → Job No 1; 1983-04-01 to 1984-02-16; source msha-controller-operator-history
- **controller_controls_operator:** Davis James O Jr & Pat Mc Guire → Cassie Coal Inc; 1983-04-01 to 1984-02-16; source msha-controller-operator-history
- **operator_operates_mine:** North American Fuels Corp → Job No 1; 1984-02-17 to 1984-11-19; source msha-controller-operator-history
- **controller_controls_mine:** John  Lingerfelt → Job No 1; 1984-02-17 to 1984-11-19; source msha-controller-operator-history
- **controller_controls_operator:** John  Lingerfelt → North American Fuels Corp; 1984-02-17 to 1984-11-19; source msha-controller-operator-history
- **operator_operates_mine:** North American Fuels Corp → Job No 1; 1984-11-20 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** North American Resources Corp → Job No 1; 1984-11-20 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** North American Resources Corp → North American Fuels Corp; 1984-11-20 to current/open; source msha-controller-operator-history