Which American multinational oil field service company has been testified against in Congress by Bunny Greenhouse in 2005?
Bunny Greenhouse:  On June 27, 2005, she testified to a Congressional panel, alleging specific instances of waste, fraud, and other abuses and irregularities by Halliburton with regard to its operations in Iraq since the 2003 invasion. Halliburton:  One of the world's largest oil field service companies, it has operations in more than 70 countries.
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