# Relationship history for MSHA mine 1701101

Current hierarchy: **John D Raymond Jr.; William T Rayfield → Haley's Inc. → Portable Screen**

- 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:** William T Rayfield et al → Portable Screen; 2020-04-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Haley's Inc. → Portable Screen; 2023-08-08 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** William T Rayfield et al → Haley's Inc.; 2023-08-08 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** John D Raymond Jr. et al → Haley's Inc.; 2023-08-08 to current/open; source msha-controller-operator-history