Update: The helicopter crew successfully applied 8,000 gallons of dust-binding material called Dustbind Plus mixed with water on the rock from the LBNF/DUNE project in the Open Cut. We will continue to closely monitor the effectiveness of our dust mitigation measures.
Helicopter flights will require short, temporary closures beginning 8 a.m. through early afternoon in Lead, SD.
A helicopter will be applying a dust-binding material to the excavated rock in the Open Cut from the LBNF/DUNE project on Wednesday, Oct. 19, beginning around 8 a.m.
Crews on the ground will briefly close Route 85 to traffic as required. The short, temporary closures of Route 85 will happen over the course of about 5 hours and take place about a quarter mile west of Route 385, near the Lead city limits.
In addition, ground personnel will close the Homestake Trail for the full duration of the helicopter flights.
For more details on the helicopter flights, please see the original announcement.