Shrinking industry??  As more 3rd world countries use fuels and plastics and rubber.  If anything the demand has risen and the only reason the industry has kept up with demand of a limited resource is the ingenious ideas of those in the oil industry. 
There is only one reason the pipeline is not currently full of oil.  The federal government control of land in this state.  There are proven reserves that have been taken away from oil companies.  

Without drilling and mining this state has no need for a cell towers or large shipping vessels.  
Or teachers or nurses or all the other service sector jobs that are directly or indirectly paid for by natural resource development.

Fishing and logging is all that's left along with tourism which is known for its highly skilled and paid work force.   
I am sorry to say my head is not in the tar sand but I did vacation in Hawaii with a group of Canadians who worked in the tar sands and they enjoyed their work and salaries.