Monsanto sold banned chemicals for years despite known health risks, archives reveal

Company refutes legal analysis of documents suggesting it ignored risk to human health and environment long after pollutants' lethal effects were known

Monsanto continued to produce and sell toxic industrial chemicals known as PCBs for eight years after learning that they posed hazards to public health and the environment, according to legal analysis of documents put online in a vast searchable archive.

More than 20,000 internal memos, minuted meetings, letters and other documents have been published in the new archive, many for the first time.