Environmental services company Clean Harbors Inc. said it has agreed to acquire Safety-Kleen Inc., an oil recycler to the likes of NASCAR, for $1.25 billion, in a deal that will grow its sales and profits by about 50 percent. Clean Harbors, based in Norwell, has been a fast-growing company in the field of collecting and disposing of hazardous waste since the 1980s. In what its chief executive, Alan S. McKim, is calling a “landmark event” for the company, the addition of Safety-Kleen launches Clean Harbors into the profitable oil re-refining business, and will enable it to pentrate smaller businesses in parts-cleaning services and waste collection.
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