(425) 869-2727 | FAX: (425) 869-2735 2609 151st Place N.E. Redmond, Washington 98052-5522 mining@tbirdpac.com

Drill Information Systems Drill Monitoring and Guidance Thunderbird's DRILLING EFFICIENCY INDICATOR (DEI ™) was introduced to the mining industry in 1982, and since has been installed worldwide on hundreds of blasthole drills. The DEI product line has proven to be an extremely reliable tool that will increase a mine's productivity, reduce overall drilling costs and improve the blasting efficiency. In 2001, a newly designed DEI Plus was introduced to replace the DEI and to provide a great deal more information to the drill operator. Subsequently, the DEI + Logger was developed to replace Thunderbird's Stratalogger and allows the operator to log critical drilling performance indicators. This logged data is converted into meaningful information and reports using the Thunderbird office software. At Minexpo 2008, Thunderbird introduced the new IMS Mobile family of products for blasthole drills including HPGPS Drill Guidance. Product Links and Complete Details IMS Mobile—Drill Guidance Thunderbird introduced at Minexpo 2008 its new Integrated Mining System which includes HPGPS Drill Guidance for blasthole drills. This product has been designed from the ground up by an experienced team that has previously been involved in the development of production drill monitoring and GPS guidance systems. This background has allowed the team to design a system with many unique features not available in competitive systems that will provide its customers with a higher rate of return on their investment. DEI Plus is the latest in a long line of rotary blasthole drill monitoring products from Thunderbird. It is a completely redesigned version of the original Drilling Efficiency Indicator (DEI) and provides the operator with a great deal more information than was available from the DEI. DEI + Logger allows a number of parameters to be logged and then downloaded into a SQL database allowing reports to be generated on drill and operator performance, delays, drill bits and other information critical to the drilling and blasting operation. A DEI Plus can be upgraded to a DEI + Logger. DEI After more than 20 years, the DEIs were taken out of production and have been replaced by the DEI Plus. However, hundreds of DEIs are still in operation, and Thunderbird continues to repair and service the DEIs, as well as supply spare parts for the systems. The original DEI systems can be easily upgraded to DEI Plus systems.

Thunderbird Mining Systems | (425) 869-2727 | FAX: (425) 869-2735 2609 151st Place N.E. - Redmond, Washington 98052-5522 | mining@tbirdpac.com