In this market, consultants or companies estimate a person's or company's output of greenhouse gases.

Although there are no firm numbers, business executives and consultants estimate that so far from 20,000 to 80,000 Indian workers have been forced to return home.

The consultants estimated that the annual savings could range up to £192 million.

Early in the application process, Mr. Pascucci's consultants estimated that restoring the house would cost about $5.7 million.

The consultant estimated the cost of repairs at $450,000, money the county did not have.

An outside consultant has estimated that it will cost more than $161 million to alter the Mombasa refinery to process unleaded fuel.

Several political consultants estimated that they charge $20,000 to $40,000 a month for a statewide campaign and less for local races.

He would not disclose what he charged, but consultants familiar with campaign costs in that area estimated it was from $20,000 to $50,000.

International geologists and consultants have estimated that unexplored territory may contain vastly larger reserves.

But corporate executives and consultants who monitor investment management firms estimate that it could be as high as $40 billion.