What do sequential triggers have to do with nail gun safety?
One study noted that training and the use of sequential triggers would go a long way in preventing/reducing nail gun injuries.
A sequential trip system requires that the trigger be pulled each time before the surface is nailed (as opposed to nails discharging automatically upon contact with a surface).
Sequential triggers on nail guns can prevent more than 65 percent of injuries, according to researchers at the Duke University Medical Center.
One US study of nail gun injuries showed that 90 percent were the result of the carpenter being struck (most commonly by a nail puncturing a hand or fingers). The injury rate among apprentices was 3.7 per 200,000 hours worked, compared with a rate of 1.2 among journeymen.