About half the fatalities occurring during filming are stunt-related, typically also involving special effects. Stunts can endanger not only the stunt performer however usually the digicam crew and other performers may be injured as well. Most of the overall precautions described for particular results also apply to stunts. In addition, the stunt performer should be experienced in the kind of stunt being filmed. A stunt coordinator must be in cost of all stunts since a person cannot carry out a stunt and be in sufficient control of security, especially when there are several stunt performers. Aircraft, especially helicopters, have been concerned in the most critical multiple fatality accidents in movement image production. Acrobatic manoeuvres, hovering near the bottom, flying too close to sets utilizing pyrotechnics and filming from helicopters with open doors or from the pontoons without sufficient fall protection are some of the most dangerous situations.
Sometimes mercury is added to the neon gas to create a very vivid blue colour. Mercury is extremely poisonous by inhalation and is unstable at room temperature. Mercury must be added to the neon tube with great care and saved in unbreakable sealed containers.
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