No wonder he's been tricky to extract.
These were particularly tricky to extract, except by hand – and we wanted to record addresses and case outcomes.
Russia is drunk with hydrocarbon power, Africa is Africa and the other stuff is very deep (Brazils new find is the deepst offshore find) or tricky to extract (the Alberta oil sands).
High prices are encouraging the production of unconventional or tricky-to-extract oil elsewhere.
Much of the second half is taken up with the devilishly tricky business of trying to extract causation from correlation.
A trickier local concern is hydraulic fracturing, to extract the natural gas found in shale rock.
Natland believed that an underground explosion a goddamn nuclear explosion would effectively create an underground well and melt that tricky bitumen into a slurry making it far easier to extract.
You not only need a whole team of people to style them, but also to extract you from the mind-boggling array of tricky situations that unnaturally long hair presents you with.
The amount of silver in local ore was not easily estimated even for those extracting the ore, and is very tricky to estimate using a fragmentary historical record.
That makes it tricky to build a subscription model.
