Glass Collection Procedure

Evidence integrity and continuity Introduction In criminal investigations, it is vital to keep the evidence protected and ensure that it does not become contaminated, is tampered or altered in any way. There are two ways of maintaining evidence is in its truest form; evidence continuity and evidence integrity. Evidence is a vital component in criminal investigations and is the determining factor in successfully prosecuting the defendant as it identifies the offender or those who are involved. Evidence institutes facts of the crime and also proves that a crime has been committed (Tom McEwen 2011).

Forensic evidence has been shown to be reliable due to many factors of evidence such as DNA, blood, fingerprints, etc.; however, many cases have shown that

The gathering, protection and safeguarding of evidence is a crucial facet of evidence integrity, without accurate adherence to these processes, vital evidence that could possibly have significant influence on a court case could be deemed inadmissible. Therefore identifies the importance in establishing policy and procedure for law enforcement agencies in the identification, collection, and storage of evidence. Objects that constitute fruits, instrumentalities, or evidence of the crime or are contraband may be introduced in evidence and exhibited to the jury if it is proven that such objects offered as evidence relate to the crime charged (Garland, 2015, p. 417). Below is a procedure for handling physical evidence for presentation

Once tests have determined the presence of blood, more will be completed in the lab to determine if the blood is animal or human. Other tests will determine the DNA, which can point the investigator to specific individuals. The completion of the actual splatter analysis is done by a forensic scientist who establishes the path of the blood and how it spread over the surface in question. The direction of movement can be determined by measuring the shape of the bloodstain on a surface. This will also show the approximate speed at which the blood contacted the surface, assists in distinguishing between the rapid movement of blood (produced by a gunshot, severing of a main artery), or slower movement of blood from a minor cut. The origination of blood can be determined by analyzing the size and location of the blood drops. A strong force of impact will cause the blood to break up into smaller drops. Blood splatter made up of larger drops with a path of smaller drops can show evidence about how the blood got there and where the blood came from. An experienced blood splatter expert relies on their eyes and their training in the final analysis, but will also use other tools such as specialized computer programs which can help in legal cases .

A wall of glass separated Stella, Mark, and I, which explained the visual effects. It didn’t seem to be much of a problem. Stella was banging on the glass and pointing on the floor. I searched the ground for whatever she was pointing at. A glass vial, a shovel, a Roman-era axe (how was that there?).

Glass can also hold fingerprints which can be very valuable to an investigation as the fingerprints can be taken up on tape and then ran through a database, possibly finding a match and allowing the investigators to find and capture a suspect.

The most efficient and acceptable means for the collection of evidence to be permissible and admissible to a court of law through trial proceedings is to maintain a credible chain of custody. However, the chain of custody is an insufficient factor without proper discovery retrieval and/or collection of evidence. When offenders respond to a scene in which there is evidence to be collected, only officers properly trained in the process are allowed to collect the evidence. In the State of Georgia, law enforcement officers undergo a strenuous police academy course in which they learn the fundamentals of collecting elements such as fingerprints and bodily fluids. In addition to learning the fundamentals of collecting elements at a crime scene, they are also instructed and trained on how to properly take crime scene pictures. These pictures are important because they show the courts where an element or piece of evidence was discovered in reference to the whole sight of the scene. Once the officer collects the elements/evidence according to his or her training they place the evidence in either a plastic or paper bag to be submitted into evidence. Upon the collection of evidence there is a legible record of each person that handles the evidence from start to finish

I observed the bedroom window to be smashed and small hole in the bottom of the window. I observed the screen for the window to have a tear. I also observed shattered

It has transpired of us: we've been driving down the interstate stuck behind an expansive truck, and it kicked up a stone that hit our windshield. At to start with, it appeared to innocuously ricochet off, yet as we drove not far off we understood that the stone took out a piece of the windshield and spread a split most of the way over the surface of the glass.

I called the police the second I saw it shattered. The police arrived and began searching upstairs when me and a couple detectives were downstairs.Suddenly I heard gunshots and took cover behind a table a detective flipped over.One of the police officers returned covered in red paint ,but I knew it was blood by how dark it was as it stained his white shirt and was splashed all over his badge number.I felt very scared and almost wanted to cry out of confusion of the situation.

Where did it come from? Spinning around in search of the source, I notice that the dry cleaning shop behind me no longer has a front. Jagged edges of glass cling to the frame, but I can’t figure out how the glass broke, how it got onto the ground, creating a blanket of danger across the pavement.

Criminal investigators are able to determine whether the individual was involved in a hit and run by examining the glass fragments on their clothing. In addition, forensic examiners that are trying to trace evidence utilize magnification and light to discover fragments of glass on an individual or their clothing. They generally use tweezers or tape to collect the samples of glasses. There are also different types of glass such as obsidian, soda-lime, leaded, tempered and laminated glass. There are also different types of fracture patterns such as radial and concentric (NFSTC

Results - The results supported that of the first experiment. The participants in the smashed condition overestimated the speed of the cars. The participants who reported seeing broken glass: Condition|% who answered yes. Smashed|32%, Hit|14%, Control|12%.

There are a variety of tools and equipment used in the glassblowing process. Three of which consist of three very large furnaces. The first furnace melts the glass and keeps the glass hot. The melted glass inside the first furnace is referred to as batch. The furnace keeps the batch at over two-thousand one hundred degrees Fahrenheit. The glassblower then takes a long pipe, about four feet long, and places it inside the furnace. In addition, the glass pipe is heated to a really hot temperature so that the glass will adhere to the metal rod. If the rod is not heated, the glass will not stick to the rod. The pipe used to collect the molten glass is called

One of the most used materials in human history is glass or more specifically silicate glass. Although some types of glasses are called crystal glass, glass is actually an amorphous solid and does not have a crystal structure. It is used in all walks of life ranging from homes to automobiles to laboratories. Historically, the one of the first types of glass that was used by humans to make tools and weapons was the volcanic glass known as obsidian. As for manmade glass, the earliest accounts date back to 5000 BC in the middle east. Primitive methods of glass making were used until about 100BC, when glassblowing was believed to be discovered. This discovery made glass products popular in the Roman Empire since the development of glassblowing allowed glass production to be more efficient and thus less expensive. As the centuries went on more techniques were developed which eventually lead to glass products being widespread. This paper will discuss some of the methods of glass production throughout history, the types of silicate glass, and the different ways that glass can be colored.