"chief area" is a valid phrase in written English.
It is often used to refer to a given person's primary area of focus or expertise. For example, "John is an expert in financial markets and his chief area of specialism is portfolio management."
The chief area of disagreement -- and it is a major one -- is the mechanism for delivering drug coverage.
Martinez previously served as chief area officer of the Chicago public schools, the third-largest school district in the United States, serving more than 400,000 children.
But then the bullpen showed why it had been identified earlier in the day by General Manager Sandy Alderson as his chief area of concern before the trade deadline.
Its main claim to fame is the excellent range of dim sum available at lunchtimes, and that is the chief area of competition, with Pearl Liang matching Royal China dumpling for dumpling.
Anusha Couttigane, senior consultant at Conlumino, said: "Weakening consumer sentiment, especially since the crash of the Chinese market during the summer, has transformed a once booming region into Burberry's chief area of concern".
Writing about the "Ségo-Sarko" campaign in a Letter from Europe in April of that year, Jane Kramer identified the chief area of concern regarding Sarkozy: His competence is not in question… What is in question is his character.
One of Lurie's chief areas of investigation has been the relationship between algebraic geometry and derived algebraic geometry.
Ms Johal's chief areas of concern are medical education – specifically the need to train students in whistleblowing – and the privatisation of sexual health services.
Procurement and research and development are the chief areas in which Defense Secretary Robert Gates has sought savings in the proposals he announced in April.
One of the chief areas of contention in Hollywood labor negotiations is the rate of residuals that actors, writers and directors receive from DVD's, whose sales and rentals have exploded since the last contract was negotiated.
His chief areas of interest are black holes and quantum loop gravity, a new theory of gravitation that reworks Einstein's general theory of relativity in terms of quantum loops.
