Semi Truck Crash Carlin Tunnel

On I80w in Carlin,NV at the Carlin Tunnel 01/27/2013 .I work for Prime INC when entering the tunnel I noticed halfway through the tunnel that the cars inside had just spun out and crashed seconds before I entered the tunnel.I was able to get the truck down to a safe stop ,before being rear ended by another truck causing a chain reaction of crashes. The pickup truck driver just made it out before being part of the pile up.If I did not maunuver the truck just how I did both those trucks would have crashed into me.There was no way to avoid this wreck.the truck that hit me was following to close to the truck that came up on my passenger side or he would have not hit me. When my truck was struck I had the brakes fully applied and I still moved about 20 feet.