Screw clamps. Screw clamps are types which use a screw mechanism to adjust the jaws and clamp a workpiece in place. The types which are found in the screw clamp category include G clamps (also known as C clamps), F clamps, edging clamps, wooden hand screw clamps and rack clamps.
Dry drowning usually happens soon after exiting the water, but with secondary drowning, there can be a delay of up to 24 hours before the person shows signs of distress. Both can cause trouble breathing and, in worst-case scenarios, death.
The average daily number of deaths from drowning on weekend days was about 14, and about nine on weekdays. Between 1999 and 2010, drowning death rates decreased 46 percent for infants under age 1, 17.5 percent for children ages 1 to 4, and 30 percent for children ages 5 to 19 years.