I understand the idea of traces being left behind. I am questioning that traces of metal are left behind that can be compared. We have no evidence that the knife broke off into anyone. How do Forensic Nurses Determine Knife Wounds? - Florida Forensic Science
Yeah for the CAT!
I don't know, I am not an academic, the websites for articles are not ones I'm familiar with. This may be relevant? My understanding is that they identified a victim had been injured with two different edged weapons using the metallic traces? Please correct me if I am wrong, this is outside my area.
This is a most awesome post @isabella88
pubmed.ncbi.nlm.nih.gov
I read this when the subject came up. My own question is how often is this technique used and is it admissible?
JMO
The detection of metallic residues in skin stab wounds by means of SEM-EDS: A pilot study - PubMed
The morphological analysis of stab wounds may often not be accurate enough to link it with the type of wounding weapon, but a further evaluation may be performed with the search for metallic residues left during the contact between the instrument and the skin. In this study, Scanning Electron...
Great answer! Really sums it all up. In Idaho, we are faced with 3 (including Kohberger) trials with the death penalty at stake. We're reminded almost every day via local news, local newspapers, etc. I'm just surprised that the traffic on this site didn't fade away months ago. It's heartwarming to know that people across the Country still care.
Perhaps he does not have an Instagram account. What little (verifiable information) I've read about BK, I wouldn't be surprised if he didn't have an account.
Thank you, this is awesome.Detection of metal residues on bone using SEM-EDS—Part II: Sharp force injury
Scanning electron microscopy coupled with X-ray energy dispersive spectrometry (SEM-EDS) is extensively seen in the literature for the improvement of …www.sciencedirect.com
^ I think this one is full textIdentify the injury implements by SEM/EDX and ICP-AES
The forensic investigator is frequently confronted with the discrimination and deduction of injury implements, which is one of the most important phys…www.sciencedirect.com
...forward-thinking professionals should think about the possible presence of exogenous micro-traces of forensic concern and collect specimens to be analyzed through in-depth analyses..from
Look before washing and cleaning: A caveat to pathologists and anthropologists
Partially or totally skeletonized bodies are undoubtedly the most challenging scenario to deal with for forensic pathologists and anthropologists. Ind…
Two different sharp-edged weapons discovered in a stabbing murder via this type of analysis:
Particles from scalpel blades have been found with these new methods.
Knife and crow bar particles retrieved:
Use of postmortem computed tomography to retrieve small metal fragments derived from a weapon in the bodies of victims in two homicide cases
Postmortem computed tomography (PMCT) is becoming a commonly used modality in routine forensic investigation. Mechanical injuries including laceration…
Now I will say that it helps if the knife strikes bone, for these particles to be left. My point is that if the wounds on KG were as deep as her father says, it's likely the knife at least nicked a bone. Every single object on earth is decaying at some rate - very slowly, for most, but detectable. Tiny particles of a crowbar or a knife can lead to identification with a match with the weapon used.
Knife residue found here:
Aspects of 3D surface scanner performance for post-mortem skin documentation in forensic medicine using rigid benchmark objects
Background: Patterned light 3D scanning has historically been targeted towards industrial and manufacturing applications. Forensic 3D skin surface sca…
Turns out that most knives have a thin outer layer/coating (often identifiable and can be specific to a certain type of knife).
And the following articles shows that one does not even have to retrieve the particles - they can be analyzed by radiological techniques:
Hyperspectral imaging for non-contact analysis of forensic traces
Hyperspectral imaging (HSI) integrates conventional imaging and spectroscopy, to obtain both spatial and spectral information from a specimen. This te…
I have way more, some of those are behind paywalls, of course.
That's incredible - and I had read that their facility in Spokane (less than 2 years old) was equipped with absolutely state of the art equipment.
That particular scanner can actually give a profile of the composition of the particles. Even if the knife is not a proprietary formula, I can post a lot of forensic anthropology about how we find the source of metals in found objects. Each element used in making knives has various isotopes and profiles. The below article is behind a pay wall but at the beginning lists how we know where iron or copper or other metals were originally mined.
From Ores to Metals
The first steps in the production of a metal object are to extract the ore from the mine, process the ore for smelting, and then eventually smelt the ore into metal. As fundamental as these steps may be, they are also the least studied in ancient metallurgical...link.springer.com
that would have been too good to be true- I did read the warrant above as some one later noted and it is for:
His knife, if he kept it, would have been washed. What screws these morons over is that the blood tends to get inside the openings in the sides. If you stuck in a bowl of oxyclean you’d be good, regardless, whatever his car shows will nail him. He cleaned it for a reason, and that reason is going to be blood from the victims.
Not just across the U.S., either
You’re not the only one who thinks there is more to it. I’m on the fence but I see others commenting. Perhaps LE is identifying other possible motives so they can discount them? Idk. June can’t come fast enough, but I’m guessing he’ll plead not guilty and ask for a continuance to prepare for the defense. JMO. INAL so may be way off base.
JMO and speculation.
Kohlberger's Elantra was called in on 11/29.
