这些中奖者是在美国中西部的内布拉斯加州一家肉类加工厂工作.

The winners work at a meat processing plant in the mid - western state Nebraska.

工人们得知，如果在肉类加工厂工作，就假设是阳性。

If you work at the meatpacking plant, they were told, assume you're positive.

仅仅在火灾发生前五年，厄普顿·辛克莱（Upton Sinclair）发行了《危险地带》一书。 书中曾经详细描述了肉类加工厂工人的困境。

The fire had come only five years after Upton Sinclair published his book The Jungle, which detailed the plight of the workers at a meat packer's plant.