Case Study:
In the Coal Fields of Wyoming, wi4 Mesh Solutions are Mining Enhanced Efficiency, Productivity and Profitability (http://www.creativecom.com/downloads... )

Excerpt:
Company Overview: Leading International Mining Organization
In the coal mining fields in the barren plains of eastern and southeastern Wyoming, one of the most successful mining operations in the world is adapting advanced technology to solve typical strip mining communications and productivity challenges. Together with its long-time service provider, 3-DP of Scottsdale, Arizona, the company is adapting Motorola’s wi4 Mesh solutions in a wide variety of applications that are improving communications, efficiency and productivity in three surface coal mining sites in Wyoming and one in Montana

I believe the above-mentioned mines are:

Cordero Mine (Wyoming) - Rio Tinto Energy America (3rd largest producing US coal mine in 2007)
Jacobs Ranch Mine (Wyoming) - Rio Tinto Energy America (4th largest producing US coal mine in 2007 - Note: Acquired by Arch Coal in March 2009)
Antelope Coal Mine (Wyoming) - Rio Tinto Energy America (5th largest producing US coal mine in 2007)
Spring Creek Mine (Montana) - Rio Tinto Energy America (11th largest producing US coal mine in 2007)

Motorola technology used at these mines:
MOTOwi4™ Solution
• wi4 Mesh Solution
• wi4 Fixed Solution
• MEA technology
URL: http://www.motorola.com/business/v/i...