Even giving the benefit of maximizing the remuneration rate, that is not really very much:
It might be $60K for six months but those are 16 hr days. So effectively it is equivalent to $60K for 12 months. However, that equivalency is for normal 40 hr weeks, not on call 24/7, high pressure, and shall we say less-than-ideal working (and living!), conditions. A contract for six months of possible hell at $30/hr doesn't look so good to me.