Many miners think drywashers are only for use in the desert. The
truth is they are useful any place where the material is very dry. Since drywashers
quite as efficient as devices that use water for separation, wet methods should
be used if possible. The recovery rate of a drywasher decreases dramatically
as the moisture content of the material increases so make sure the material
you are working is very dry. You can dry the material somewhat by either spreading
it out on a tarp to dry (it helps if you walk on it now and then to break it
up) or you can run it through the drywasher repeatedly until it is dry.