Accidental sharp force injury fatalities.

The authors review all accidental sharp force injury deaths investigated at the Southwestern Institute of Forensic Sciences from 1990 to 1999. Twenty-two cases of accidental sharp force injury were identified, accounting for 0.29% of all accidental deaths (9,562) during the 10-year study period. Included in this series are 5 incised wounds, 11 stab wounds, 4 chop wounds, and 2 deaths caused by dog attacks. About half of the cases involved some type of motorized machinery. The victims' ages ranged from 2 years to 71 years, with most deaths occurring in older teenagers and younger adults. Male subjects (17) were involved much more frequently than female subjects (5). In 50% of the cases, ethanol or other drug use was a possible underlying contributing factor in the accident. The cases are briefly reviewed, and the importance of detailed investigation in manner-of-death certification is emphasized.     

Patterns in sharp force fatalities--a comprehensive forensic medical study: Part 2. Suicidal sharp force injury in the Stockholm area 1972-1984

A total of 89 cases of sharp force suicide that had been committed in the Stockholm area in Sweden from 1972 through 1984 were investigated. The series showed a male preponderance, sex ratio 3.3, and among males a shift towards the age group 40 to 49 years of age. An impact of cultural/ethnic factors was indicated by the overrepresentation of Finnish and Hungarian immigrants. A psychiatric diagnosis had been ascribed in 22 cases, and addiction to drugs or alcohol in 23. Previous attempts at self-destruction were recorded in 11 cases, only 1 of which was by sharp force. Classical indicators of suicidal intent, for example, suicide notes and the presence of hesitation injuries, were found in 28 and 80%, respectively. A preference for certain anatomical locations (throat, precordium, epigastrium, wrists) was confirmed as was the tendency to expose the skin before inflicting suicidal wounds. As compared to homicidal precordial stabs whose entrance wounds usually run vertically, horizontal or upwards/left-slanting stabs are strongly suggestive of suicide. Although cases were encountered where several "rules of thumb" concerning homicidal versus suicidal patterns were violated, our series contained no case of injuries to the backside of the trunk and no case of more than one wound piercing the left ventricle of the heart. Multiple chest wounds transecting costal or sternal bone were however not uncommon, and, along with the use of bizarre tools and objects like wood chisels or pieces of glass, illustrated the determination of suicidal intent. Toxicological analysis was positive for drugs in 22 and for alcohol in 27 cases. Blood alcohol levels were roughly similar to those found in victims of homicidal sharp force, whereas drug levels tended to be lower or higher in suicides.     

Criteria for homicide and suicide on victims of extended suicide due to sharp force injury

This report is about the findings in association with the extended suicides of nine victims killed by sharp force. All victims were killed by sharp force. The perpetrators were predominantly the parents, the victims their children. Regarding the criteria for differentiating self-inflicted injuries from injuries inflicted by another person, the victims' injuries presented patterns usually found solely in suicides. Thus eight of nine cases presented tentative and hesitation injuries, in three of five cases areas of injury covered by clothing had been exposed beforehand. Despite extremely narrow intercostal spaces in children, injuries to the bones in thoracic stabbing were avoided more often than not (four of seven cases). Only the criterion "defence injury" occurred nearly as often as in homicide victims (three of nine cases). The psychopathology of extended suicide can explain this pattern. The perpetrator's motive is characterised by his pseudoaltruistic belief to save the loved ones from a world that is in his opinion unacceptable. A fusion or integration of the victim into the perpetrator's own self is based on an identity problem. Physical interrelation of forces between perpetrator and victim restricts the victim in his defence and presents an important prerequisite for acquiring the patterns of described injuries.     

Accidental railway-related fatalities. The Metro Dade County experience, 1980-1984

A study of accidental railway-related fatalities was performed using the case files of the Office of the Medical Examiner of Metropolitan Dade County in Miami, Florida, during the years 1980-1984. The nine cases that were collected are presented here in some detail. A discussion ensues concerning the most common type of accidental railway-related fatalities, why they occur, and what future work remains in order to avoid such fatalities. Evidently, fatalities more frequently result from victims' disregard for safety--either by crossing the tracks despite warning, or by utilizing railroad trestles as a fishing pier--than from mass disaster. Future work involving forensic engineers, forensic pathologists, and lawyers along with community activists should include both public education and a design of less accessible trestles to avoid such tragedies. In conclusion, it is hoped that this article will serve as a catalyst for further research on this subject.     

Accidental childhood deaths. The Metropolitan Dade County experience, 1978-1982

Accidental deaths in childhood were studied between 1978 and 1982 in Metropolitan Dade County. Cases were collected from both traffic and nontraffic accidental fatalities in which the victim was less than 12 years of age. Cases were then subdivided into traffic and nontraffic groups. Each group was then analyzed as to age, race, sex, cause of death, and scene circumstances. A total of 294 cases was studied.     

Bones, blood, pellets, glass, and no body.

A man was found guilty of killing his wife, although her body was never found. The case centered on her car, which contained fragments of bone, glass, shotgun pellets, and dried blood. Deoxyribonucleic acid (DNA) fingerprinting techniques were used to establish the decedent's identity. Examination of the bone fragments revealed that they were from the skull. These two pieces of information, added to other evidence, proved that the defendant's wife had received a fatal injury in her car, and a guilty verdict was rendered.     

Public visibility of building not enough to start statute of limitations on architectural copyright infringement claim

A cause of action for infringement of an architectural copyrightwas held not to accrue until some ‘triggering event’put the plaintiff on inquiry notice of his claim. The Courtof Appeals rejected the proposition that architects have a generalduty to review public records or visit public sites in orderto police their copyrights; thus, the mere fact that the structurein dispute was erected in plain view of the public was insufficientto commence the limitation period.     

Accidental autoerotic deaths between 1978 and 1997. Institute of Legal Medicine, Medical School Hannover

Between 1978 and 1997 the Institute of Legal Medicine of the Hannover Medical School examined 17 fatal autoerotic deaths. The incidence for the Hannover region was 0.49 cases per million inhabitants per year. The victims included 17 men with an average age of 36.8 years; a peak in the age distribution was seen between 20 and 29 years. Twelve of the men were found by friends or family in a domestic environment, while other situations in which the victims were found included the victim's own car, a hotel room, a canal embankment, a public parking lot as well as the holding cell of the youth detention center. The men were of varying socioeconomic status and held a number of different types of jobs or still attended school. Five of the men were found completely nude, while five were only undressed below the waist. Four men wore women's clothes and two were fully clothed with exposed genitals. Besides women's clothes, other objects found at the scene included various types of sexual aids, including ropes, chains, metal bars, locks, sex magazines, condoms, plastic bags, rubber items, etc. In four cases blood alcohol levels between 0.1 and 2.5 per thousand (urine alcohol levels between 0.2 and 2.5 per thousand ) were found. Toxicologic examination revealed chloroform, ketamine, a propane-butane gas mixture in one case each, and in two cases cocaine and morphine. Causes of death included central paralysis after strangulation (seven cases), asphyxiation (4), subarachnoid hemorrhage (2), intoxication (1), hypothermia (1), left heart failure (1), and drowning (1). The history, findings at scene, and autopsy findings and, in individual cases, other investigations are of utmost importance to accurately reconstruct a fatal autoerotic accident.     

Unreasonable Women: Gender and the Law of Accidental Injury, 1870-1920

At the wheels of railroads and streetcars, the law of accidental personal injury, known as negligence, became a discrete body of law between 1870 and 1920. The defining component of negligence was "fault"–the notion that the individuals (injured and injurer) must have failed to act according to some minimal standard of caution. Theorists of the history of negligence have explained that the conduct of all was measured against what a "reasonable man" would have done under the circumstances. The author here challenges this fundamental assertion. Through trial records, lawyer's written arguments, and appellate opinions, she reconstructs the critical role of gender in shaping the law of accidental injury. As she argues, in 19th- and 20th-century America, injury was a gendered event. The fact that courts in these years held men and women to different standards of care undermines theorists' arguments that economic considerations drove the law of accidental injury. Moreover, the reification of gender nm in private law, in turn, vitally affected the experience of gender in turn-of-the-century America.     

Foods--adulteration involving hard or sharp foreign objects; compliance policy guide; availability. Food and Drug Administration, HHS. Notice

The Food and Drug Administration (FDA) is announcing the availability of a compliance policy guide (CPG) entitled "Foods--Adulteration Involving Hard or Sharp Foreign Objects." This CPG is intended to help FDA components and industry comply with FDA's internal enforcement process concerning foods that contain hard or sharp foreign objects.     

Injury pattern on the hand after slipping onto the blade during a knife attack--a contribution to the differential diagnostic classification of sharp force injuries of the upper extremities

Differential diagnosis of injuries caused by accidental slipping of the hand onto the blade of a knife includes self-inflicted injuries (e.g. to simulate an offense) as well as active and passive defense injuries indicative of the involvement of another party. The injury pattern on the hands of five perpetrators who suffered accidental cuts during knife attacks, as seen by the authors during the clinical forensic examination, is presented. The injuries were localized on the ulnar aspect of the thumb facing the index finger, the radial aspect of the index finger facing the thumb and variable sites on the flexor or extensor side of the middle and ring fingers. Especially in those cases in which the injuries of the victim (e.g. involvement of bony structures) and the dominant hand of the perpetrator are known, additional information for the reconstruction of the course of events may be derived from the cut wounds occurring during the knife attack as the hand slipped onto the blade.     

Accidental potassium dichromate poisoning. Toxicokinetics of chromium by ICP-MS-CRC in biological fluids and in hair

Intoxications by chromium (Cr) compounds are very life threatening and often lethal. After oral ingestion of 2 or 3g of hexavalent Cr (Cr(VI)), gastrointestinal injury, but also hepatic and renal failure, often occurs which each leads to a fatal outcome in most patients. Cellular toxicity is associated with mitochondrial and lysosomal injury by biologically Cr(VI) reactive intermediates and reactive oxygen species. After Cr(VI) has been absorbed, there is not much that can be done except to control the main complications as the treatment is only symptomatic. The biotransformation of Cr(VI) to Cr(III) reduces the toxicity because the trivalent form does not cross cellular membranes as rapidly. In fact, more than 80% of Cr(VI) is cleared in urine as Cr(III). We report the case of a 58-year-old male patient who was admitted to hospital after accidental oral ingestion of a 30 g/L potassium dichromate (the estimated amount of ingested Cr is about 3g). ICP-MS equipped with a collision/reaction cell (CRC) and validated methods were used to monitor plasma (P), red blood cells (RBCs), urine (U) and hair chromium. For urine the results were expressed per gram of creatinine. After 7 days in the intensive care unit, the patient was discharged without renal or liver failure. P, RBC and U were monitored during 49 days. During this period Cr decreased respectively from 2088 μg/L to 5 μg/L, 631 μg/L to 129 μg/L and 3512 μg/g to 10 μg/g. The half-life was much shorter in P than in RBC as the poison was more quickly cleared from the P than from the RBC, suggesting a cellular trapping of the metal. Hair was collected 2 months after the intoxication. We report a very rare case of survival after accidental Cr poisoning which has an extremely poor prognosis and usually leads to rapid death. For the first time, this toxicokinetic study highlights a sequestration of chromium in the RBC and probably in all the cells.     

The recovery of finger marks from soot-covered glass fire debris.

This study aimed to expand the scope of previous research by assessing the effectiveness of soot-removal techniques on glass from petrol-bomb debris using methods of 1% and 2% sodium hydroxide (NaOH) solutions, ultrasonic bath and vacuum suction. Of particular interest were the 1% and 2% NaOH solutions applied to the soot-covered surfaces. Petrol bombs containing petrol or a 50:50 mix of petrol and motor oil were exploded and the debris was collected for analysis. Favourable results were found to varying degrees using each of the soot-removal methods with the 1% and 2% NaOH wash solutions, being the most useful. The 2% NaOH solution also proved successful as a soak to loosen and remove heavy contamination of soot and accelerants without damaging the finger mark beneath. This study also found that recovery of finger marks in blood from beneath soot using the 2% NaOH solution was possible. Finger marks were also applied to glass bottles with plastic adhesive labels, and providing the fire damage is not too great marks were also retrievable. Results from this study lead to the conclusion that the NaOH wash solution is ideally suited for soot removal to reveal latent and blood-contaminated marks both within the laboratory and at crime scenes.     

Spatial variation of refractive index in a pane of float glass.

In the statistical interpretation of forensic glass evidence it is standard practice to make the assumption of homogeneity of the refractive index (RI) of the source glass, or of localized homogeneity. However, the work of Locke and Hayes showed that, for toughened windscreen glass, this assumption might not be true. This work is well cited, but there appears to have been little follow-on published research. Furthermore, the toughening process is something known to affect the refractive index, and is a process that float glass does not undergo. Float glass is a major component of casework in New Zealand and for that reason it would be interesting to know whether the findings of Locke and Hayes apply when dealing with float glass. In this paper we describe an experiment similar to that of Locke and Hayes, systematically examining the variation of RI in a pane of float window glass. It was found that, although there were no systematic differences in refractive index, there were observable differences across the pane.     

Waste not, want not—A look at the impact of manufacturing extension centers

Manufacturing extension centers have helped small manufacturers improve performance on the shop floor and thereby reduce costs. This article presents a case study of a metal working firm that was able to increase productivity and profits by instituting measures recommended by a field agent working for the Florida Manufacturing Technology Center (FMTC). As a result of services provided, the company was able to boost manufacturing throughput and increase production efficiencies. Using a simulation model, the article explores how small changes in manufacturing performance can result in significant cost reduction. It then discusses the consequences of alternative strategies designed to enhance the value of goods sold, rather than lower the costs of production. It concludes by arguing that manufacturing extension centers should help companies become more distinctive as well as more efficient.     

The transfer of touch DNA from hands to glass, fabric and wood

The transfer of DNA from hands to objects by holding or touching has been examined in the past. The main purpose of this study was to examine the variation in the amount of DNA transferred from hands to glass, fabric and wood. The study involved 300 volunteers (100 for glass, 100 for fabric and 100 for wood) 50% of which were male and 50% female. The volunteers held the material for 60 s. The DNA was recovered from the objects using a minitape lift, quantified using the Quantifiler kit assay, extracted using a ‘Qiagen^® QIAamp DNA mini kit’ and amplified using the AmpFlSTR^® SGM Plus™ Amplification Kit at 28 cycles. The results show that using ANOVA there was a significant difference (F = 8.2, p < 0.05) between the three object types in the amount of DNA recovered. In terms of DNA transfer and recovery, wood gave the best yield, followed by fabric and then glass. The likelihood of success of obtaining a profile indicative of the holder was approximately 9% for glass samples, 23% for fabric and 36% for wood. There was no significant difference between the amount of DNA transferred by male or female volunteers. In this study good shedder status, as defined by obtaining useful profiles of 6 or more alleles, is estimated at approximately 22% of the population. The phenomenon of secondary transfer was observed when mixed DNA profiles were obtained but the incidence was low at approximately 10% of the total number of samples. DNA profiles corresponding to more than one person were found on objects which had been touched by only one volunteer. Although secondary transfer is possible the profiles obtained from touched objects are more likely to be as a result of primary transfer rather than a secondary source.