# Relationship history for MSHA mine 0103469

Current hierarchy: **Joel A  Wilson → Wilson Mining Company Inc. → Grier Pit / Wilson-2 Pit**

- 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:** Joel A  Wilson → Grier Pit / Wilson-2 Pit; 1991-03-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Wilson Mining Company Inc. → Grier Pit / Wilson-2 Pit; 2013-09-18 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Joel A  Wilson → Wilson Mining Company Inc.; 2013-09-18 to current/open; source msha-controller-operator-history