# Relationship history for MSHA mine 1511496

Current hierarchy: **Noffsinger Roger → American General Fuels → Saccharin**

- 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

- **controller_controls_mine:** Noffsinger Roger → Saccharin; 1977-12-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** American General Fuels → Saccharin; 1978-07-31 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Noffsinger Roger → American General Fuels; 1978-07-31 to current/open; source msha-controller-operator-history