Hmmmm ... luckily the Mojave Rattlesnake (or "Green Mojave") isn't mentioned here (However, I'd still like to RV in Australia sometime.):
http://en.wikipedia.org/wiki/List_of_dangerous_snakesOther research on the Mojave Rattelsnake indicates that around 2000 or 2001 the anti-venom for it started to be included in some/all rattlesnake anti-venom formulas. Do you own research to make sure that the anti-venom commonly available in Southwest U.S. area contains this mixture.
So far we have encountered zero rattlesnakes in our California, Oregon, Utah, Nevada, Arizona, New Mexico and Texas rockhounding. However, we try to generally tread very carefully and always beat the bushes ahead with a walking stick before coming close.
