Promo:

Some laborers are digging a trench when they get thirsty and one brings the hose over so they can drink, but "accidentally" splashes it on the others. Soon there is a water fight and when the water mixes with the dirt, this turns into a mud fight which progresses in increasing fury until the foreman comes up the scene. This is a very mild plot, but the film has lots of action.

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This mudfight occurred in the hole being dug for the pool that showed up in so many films. One additional uncredited performer.