News and Media

May 11, 2018

2017 Split Sampling Summary Now Available

Each year, the SWP carries out split sampling at permit required monitoring sites at the Eagle Mine site and the Humboldt Mill (groundwater, surface water, and facilities) in conjunction with Eagle Mine’s scheduled monitoring. Split sampling is when a sample taken from a single source (ex. a groundwater well) is divided in two, with each sample analyzed by a different certified laboratory. The objective of the split sampling is to verify that  independent lab results corroborate and are representative of environmental conditions. A summary of the split sampling results from 2017 is available here.

Read More

December 6, 2017

CEMP and KBIC Partner to Monitor Water Quality in the Headwaters of the Salmon Trout River

During 2017, CEMP in cooperation with the Keweenaw Bay Indian Community (KBIC) began water quality monitoring at 8 sites in the headwaters of the Salmon Trout River. The headwaters of the Salmon Trout River begin as “seeps” or natural springs at locations where groundwater daylights and becomes surface water (see map of sites). Results of the monitoring will be used to assess potential impacts from mining activities to the Salmon Trout River.  Please contact SWP for questions or comments on the additional monitoring locations at (906) 228-6095 ext. 13, or

Read More

November 3, 2017

Eagle Mine to host Public Lecture Regarding the Continuing Evolution of the Humboldt Pit


Read More

October 30, 2017

Eagle Mine to Host Series of Community Forums throughout Marquette County

Eagle Mine will be hosting a series of community forums throughout Marquette County. The forums are an opportunity to learn more about the status of Eagle Mine and get an update on its operations. Forums will be held:

  • Wednesday November 1st, from 5:30-7:00 PM at the Humboldt Township Hall
  • Thursday November 2nd, from 12:00-1:00 PM at the Michigamme Township Hall
  • Monday November 6th, from 12:00-1:00 PM at the Eagle Mine Information Center in Marquette
  • Wednesday November 8th, from 5:30-7:00 PM at the Thunder Bay Inn in Big Bay

Read More

September 22, 2017

New CEMP Groundwater Monitoring Well Installed Near Eagle Mine

On August 30, 2017, the SWP Community Environmental Monitoring Program (CEMP) installed a new groundwater monitoring well northeast of Eagle Mine to better understand the mine’s potential impact on groundwater quality and the Salmon Trout River. The new well, located between the mine and the headwaters of the East Branch of the Salmon Trout River, will monitor groundwater quality at a depth of 175 feet. Please contact SWP for questions about CEMP monitoring at (906)228-6095 ext. 13, or

Read More

  • Monitoring
  • About Us
  • News & Media
  • Events
  • Resources
  • Provide Feedback