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.
Drowning is the second leading cause of unintentional injury-related death among children ages 14 and under. Since 1999, an average of more than 815 children ages 14 and under have died as a result of unintentional drowning each year. These drownings occur in pools, spas, open bodies of water and in the home. Since 2001, an average of more than 3,700 children sustained nonfatal near drowning-related injuries each year.