Washington Chipotles could reopen soon

Washington state health officials said they have found no source for the E. coli outbreak related to Chipotle, and the chain's Pacific Northwest restaurants could reopen later this week. All the tests of food from Chipotle stores in Washington and Oregon came back negative for E. coli, Washington state epidemiologist Dr. Scott Lindquist said. Chipotle did its own testing, and those results came back negative as well. The Chipotle restaurants in Washington and Oregon will be allowed to reopen after they have met some conditions. They must get rid of and replace all produce, do a deep cleaning of their stores, pass a local health inspection and start a new protocol for cleaning produce.

UAW leaders send Ford contract to a vote

The United Auto Workers' proposed contract with Ford Motor Co. — approved Monday by local union leaders — is the richest of the Detroit Three, with a promise of $10,250 in bonuses for most workers this year alone. The union released details of the agreement; workers must now vote to ratify it. The four-year deal covers 53,000 workers at 22 U.S. plants. The Ford deal was reached as General Motors Co. workers await word on the fate of their own contract. The UAW said Friday that 55.4 percent of GM workers overall voted in favor of the deal, including 58 percent of production workers. But almost 60 percent of skilled trades workers voted no.

Tinder parent seeks to raise $466M in IPO

The owner of Tinder, Match.com and OkCupid hopes to raise as much as $466.2 million in an initial public offering, which would put the value of the dating site company in the neighborhood of $3 billion. Match Group Inc. disclosed in a regulatory filing that it will price its IPO of about 33.3 million shares between $12 and $14 per share. The online matchmaker will list on Nasdaq under the symbol "MTCH." Parent company IAC/InterActiveCorp, controlled by billionaire Barry Diller, has been snapping up online dating sites.

More cancellations likely for Lufthansa

A union representing striking Lufthansa flight attendants rejected the latest offer from the company as the two sides prepared for more cancellations at the airline's German hubs. Union head Nicoley Baublies said the latest offer was only a "minimal" improvement. Lufthansa said it offered improvements including increasing a one-time signing bonus to 3,000 euros ($3,300) from 2,000 euros previously. The company also proposed a summit meeting between union leaders and top management to resolve remaining issues.

DuPont's interim CEO to stay on in job

DuPont's board of directors named Edward D. Breen as chairman and CEO after a month of holding those positions in an interim capacity. Breen was named as an interim leader last month after the sudden retirement of Ellen Kullman, 59, after she had fought off a bruising challenge from activist investor Nelson Peltz. Peltz's Trian Fund wanted more influence at the conglomerate, but in June shareholders rejected his campaign for seats on the board.

Google releases its AI software for free

Google wants to set the standard on artificial intelligence. The Web company, seeking to influence how people design, test, and run artificial-intelligence systems, is making its internal AI development software available for free. The Alphabet Inc. subsidiary is releasing a program called TensorFlow as freely available open-source software.