# Relationship history for MSHA mine 2901101

Current hierarchy: **Jim Wade Fowler; Chad  Fowler; William Jeb Fowler → Fowler Brothers Inc → Portable Plant**

- 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:** Fowler Brothers Inc → Portable Plant; 1997-09-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Jim  Fowler → Portable Plant; 1997-09-01 to 2025-06-10; source msha-controller-operator-history
- **controller_controls_operator:** Jim  Fowler → Fowler Brothers Inc; 1997-09-01 to 2025-06-10; source msha-controller-operator-history
- **controller_controls_mine:** William Jeb Fowler et al → Portable Plant; 2025-06-11 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** William Jeb Fowler et al → Fowler Brothers Inc; 2025-06-11 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Chad  Fowler et al → Fowler Brothers Inc; 2025-06-11 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Jim Wade Fowler et al → Fowler Brothers Inc; 2025-06-11 to current/open; source msha-controller-operator-history