Cushing oil hub

Flying from Stroud, Oklahoma.

This the 'Oil Hub', near Cushing Oklahoma.

It's the largest oil storage site in the USA, with 43 million barrels!
From here pipelines go every direction, 

one can be seen headed to the lower right corner.
It would (will) be the southern end of the Keystone XL pipeline from Alberta Canada.

Now there's concern that earthquakes may disrupt the security.
There have been many small quakes recently, with a 4.5 quake in October 15.
It appears that these quakes are caused by the pumping deep underground
 of dirty waste water from fracking,
See the story here
http://www.npr.org/2015/11/30/456777184/confidence-in-oil-hub-security-shaken-by-oklahoma-earthquakes

This is the northern end of that proposed pipeline at Hardisty Alberta.
Photographed a couple of years ago.
Now they're really hanging out for that pipeline to be built.....