# Relationship history for MSHA mine 2103605

Current hierarchy: **Lloyd  Feldt; LeRoy  Feldt → Feldt Plumbing LLP → Screener**

- 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:** Feldt Plumbing LLP → Screener; 2007-10-16 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** LeRoy  Feldt et al → Screener; 2007-10-16 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** LeRoy  Feldt et al → Feldt Plumbing LLP; 2007-10-16 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Lloyd  Feldt et al → Feldt Plumbing LLP; 2007-10-16 to current/open; source msha-controller-operator-history