Pit & Quarry, October 2009

P rudence suggests that when an article in the Sunday supplements or unreferenced news item on the web opens with studies show that it is time to engage energetic skepticism When I delivered information to my grandmother generally of the do you know what I heard variety she would smile and tell me to take that with a grain of salt Studies show calls for salt Whose studies Who paid for the study Why did they bother Did the conclusion come before or after the study was done What information was used Can the information be checked Since questions are more interesting than answers lets push on a bit It is generally agreed that motorvehicle collisions are the leading cause of death and disability to teenagers in the United States A challenge to teens parents law enforcement and public health researchers is how to get the generalities of be careful into prevention specifics for teen drivers that will work Getting the message across to teens was a troubling question to a doctor and a nurse at a large hospital Its no wonder they were troubled they worked in the emergency room The researchers got some groups of people Safety tip including teens and adults together The adult group was made up of trauma injury prevention and social staff the teen group was made up of students in random familiar settings school programs sports events and the mall Each group was asked to evaluate three posters and select the one most likely y Safety BY CARL METZGAR Studies show Any study calls for grandmas grain of salt and a single small study not yet repeated with confirming results calls for more than a grain NEVER SACRIFICE PERFORMANCE FOR PRICE WHEN MARTIN ENGINEERING GIVES YOU BOTH MARTIN Performance Duty QC 1 Pre Cleaner Nowadays it seems like there is always a tradeoff between best performance and best price Martin Engineering believes you shouldnt have to choose Introducing the new Performance Duty QC Pre Cleaner Designed for medium to heavy duty applications with the broadest blade profile strongest mainframe and most durable tensioner on the market at a price that performs The alternative to compromise Visit martin eng com pdqc1 Call 8005442947 Email info@ martin eng com Registered trademark of Martin Engineering Company in the US and other select locations 2009 Martin Engineering Company Additional information can be obtained at www martin eng com trademarks 36 PIT QUARRY October 2009 www pitandquarry com