What needs to be clarified
Compare particles and window glass using available features, assessing differences and limits on common-origin conclusions.
Materials to prepare
- Separately packed jacket and particle recovery record
- Separate samples from each damaged pane, mapped to the window
- Damage photographs and replacement or cleanup history
What to compare
Describe and group particles while preserving recovery locations. Check physical fit when size permits, then optical features and, if needed, elemental composition. Consider within-pane variability, repeatability and discrimination criteria; do not automatically group all transparent fragments together.
Possible outcome of the analysis
A report may establish differences or describe agreeing features with qualifications, providing measurements, photographs and objects for which comparison was insufficient.
Limits of the conclusions
Matching properties do not uniquely identify the window. Timing, contact circumstances and secondary transfer need independent evidence.