The regulator is concerned about the use of an undertaking to get around competition issues.
A federal court judge has explained why undertakings from a company to treat competitors fairly is enough to allay competition concerns.
Australians will pay more for groceries and other products and the nation's takeovers regime needs to be reconsidered,competition tsar Rod Sims has warned.
The devastating north west Queensland floods have jolted the beef producer Australian Agricultural Company,with its market cap falling $78 million on Monday
Aurizon shareholders will feel the pinch after the rail freight operator reported a 19 per cent fall in net profit to $227 million for the December half.
Negotiators were called in and the protester was arrested three hours after police were called.
Higher coal volumes combined with productivity and cost savings have helped rail freight operator Aurizon lift its underlying net profit by 10 per cent.
The ACCC says the companies reached an"understanding"that would have monopolised a crucial haulage route and substantially damaged competition on others.
Rail freight operator Aurizon has hit back at the Queensland Resources Council,accusing it of refusing to engage constructively on behalf of its members
The stoush was predicted to cause a $2 billion black hole in the Queensland state budget,and a reduction of millions of tonnes of coal exported.
Premier Annastacia Palaszczuk has moved to reassure international steelmakers that the state's coal supply is secure,as she departs on a trade trip to Japan.