Alaska Journal of Commerce by Tim Bradner (NGP Photo).  With its Arctic drill fleet now assembled in Dutch Harbor, Shell is waiting on unpredictable Mother Nature. Summer ice conditions along the northern Alaska coast are the worst in a 10-year period, Shell spokesman Curtis Smith (NGP Photo-R) said July 9.   The heavy ice has caused target dates for the company’s first drilling at two exploration prospects in the Chukchi and Beaufort Seas to be pushed into the first week of August, Smith said.  “This is the heaviest ice coverage we [...]