Turner says it's very difficult to provide hard-and-fast earnings estimates for Northern Peru in these early days.
All of this is the difficult politics of ambitious change - the hard choices of implementation.
However, the alloys employed in the euros cupro-nickel and nickel-brass have long been used to make hard-wearing coins that are difficult to forge.
But trade-union rules make it difficult to hire and fire workers, lower-paid jobs for the less skilled are hard to come by, and a combination of high taxes on low incomes and generous welfare payments reduces the incentive to seek work at all.
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Studies have shown that "difficult" patients tend to have nebulous, hard-to-pin-down symptoms like headache, dizziness, and fatigue, notes Kurt Kroenke, M.
Most computers were expensive and difficult to operate, and would typically be hard-wired directly to another computer if a connection was needed.
But organisational change is time-consuming and difficult, and it's not hard to see how a government could turn in on itself during a period like this.
It is supposed to be much more difficult to show a benefit in the "hard events"--heart attack, stroke and death--than in the broader swath of "extra" heart problems that AtheroGenics measured in its trial.
He was a popular choice when appointed as successor to Bob Dwyer as Tigers coach in 1998 and moulded a side in his own image - hard as nails in the forwards and very difficult to play against.
Even if Mr Duncan Smith wanted to distance himself from hard-liners and Eurosceptics, he would find it difficult.
"I feel I'm fighting against everything - it's hard to keep throwing myself into these difficult races, " she said.
Cheshire East Council's leader warned of "difficult times ahead with hard decisions to be made" after the half-year review revealed the cash problem.
China's deep supply-chain network is hard to replicate quickly elsewhere, making it difficult for some factory owners to move.
The 10-place grid penalty in China was very difficult as it's a hard track to get close to people and overtake so, in many ways, I knew that was going to hurt us.
This not only makes it difficult to attract high-flyers into the public sector, but also makes it hard to raise standards by, for instance, putting the best head teachers in charge of groups of schools.
There are rumours that the president is hoarding hard currency to prepare for 2012, when he faces a difficult re-election battle that will cost him money.
I've learned a hard and difficult lesson considering the childhood environment that I was brought up in - not to discriminate against any plant or creature.
Opposing coaches have complained that the Broncos' all-blue uniforms make it difficult to prepare for games at Boise because it's hard to differentiate Broncos' players against the blue backdrop.
"I think - and this is where the New York Times may have had trouble as well - that scientists are very difficult to write about, partly because it's very hard to get your head around what they're doing, " he says.
It has deals with companies such as Dell and HP to embed its tracking agent into their computers' boot-up software, where it is more difficult for a thief to remove than from the hard drive.
The money, while helpful, won't turn the country around until its government makes a hard decision: to engage in a difficult and sustained battle against powerful, drug-financed guerrillas, just as Peru successfully did nearly a decade ago.
Each play-off game will be difficult, but I'm fully confident the boys will do the hard work and we'll see what happens.
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It is always hard to fund a start-up, but Dr Rodriguez said it was particularly difficult to get investors to buy into the idea of a money-making investment in Africa.
Chang Qing, of China Agricultural University, says he believes that central-government efforts are unlikely to have much impact, and that China will find it difficult to avoid a hard landing in a couple of years' time.
Other associations, such as those hard-coded into a search engine (as opposed to a static link), may be difficult to find without spending a considerable amount of time on a page.
Anytime you use unconventional conventions to tell a story, particularly at a time when pop culture is so self-reflective and it's difficult to find a unique voice, I think you are going to have a hard time selling it to people.
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