# Relationship history for MSHA mine 2401663

Current hierarchy: **Nolte Robert & Sylvan Donegan Jr → Antler Mining Company → Lucille #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

- **controller_controls_mine:** Nolte Robert & Sylvan Donegan Jr → Lucille #1; 1978-03-09 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Antler Mining Company → Lucille #1; 1982-03-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Nolte Robert & Sylvan Donegan Jr → Antler Mining Company; 1982-03-01 to current/open; source msha-controller-operator-history