MADISON, Wis. -

A company looking to dig a huge iron mine just south of Lake Superior has filed new papers with the Wisconsin Department of Natural Resources outlining a bulk sampling plan and notifying the agency it plans to seek a mining permit.

Gogebic Taconite filed the papers Monday. They include a plan that calls for sampling rock from five sites to assess the quality of the iron deposit. Less than 10,000 tons would be removed from the five sites, which would each average about half an acre in size.

The papers also include a pre-application notification, which must be filed at least a year before the actual mining permit application.

DNR officials said they'll notify the company within two weeks of approvals it needs to proceed with sampling.