# Relationship history for MSHA mine 1302428

Current hierarchy: **Lindsey R  Falk → L.R. FALK CONSTRUCTION COMPANY → Lime Screen 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

- **controller_controls_mine:** Lindsey R  Falk et al → Lime Screen Plant; 1950-01-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** L.R. FALK CONSTRUCTION COMPANY → Lime Screen Plant; 2011-11-07 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Lindsey R  Falk et al → L.R. FALK CONSTRUCTION COMPANY; 2011-11-07 to current/open; source msha-controller-operator-history