# Relationship history for MSHA mine 5100303

Current hierarchy: **Mark  Jernigan; Denise  Jernigan → SOIL PLUS → POWERSCREEN**

- 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:** SOIL PLUS → POWERSCREEN; 2009-10-20 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Denise  Jernigan et al → POWERSCREEN; 2009-10-20 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Denise  Jernigan et al → SOIL PLUS; 2009-10-20 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Mark  Jernigan et al → SOIL PLUS; 2009-10-20 to current/open; source msha-controller-operator-history