[thackney]

Hydraulic fracturing is done on most wells.

Here is an example from Pioneer this year for the planned activities in the year for the Alaskan North Slope.

Note the hydraulic fracturing scheduled from January to mid April, page 2.

http://dog.dnr.alaska.gov/Permitting/Documents/POO_PNRA_Nuna_Exploration_Program_20110919.pdf

[Eric in the Ozarks]

The coldest day of m life was the day I helped load 75,000 gallons of hot oil aboard the ore carrier Masabi Miner at Taconite Harbor, MN.
I think it was 25 below zero with a brisk 30 mile per hour breeze coming off the big lake.

[spokeshave]

OK ...thanks...my oil shale map does not cover Alaska or Hawaii (LOL)