12MA Y 200813195972 W ith capabilities in both surface and underground drilling the Company has become a onestop shop for both underground and surface drilling services Surface drilling can in many cases lead to underground drilling business as the exploration drilling continues and the mine moves into development and production The Company is also able to leverage its existing relationships to promote and crosssell its international drilling experience to domestic surface clients that are expanding their operations Strong and Diversified Customer Base The Company currently services customers at 38 sites providing underground and surface drilling to domestic companies and surface drilling to international customers No drilling project accounts for more than 10 of revenue and no single customer accounts for more than 15 of revenue The Companys customer base is a combination of major and intermediate mining companies and junior mining companies with whom the Company has in many cases long standing relationships Approximately 63 of the Companys revenue from drilling operations for the twelve month period ended March 31 2008 on a pro forma basis is attributed to major mining companies and intermediate mining companies and approximately 37 of its revenue from drilling operations for that period is attributed to junior mining companies The diversity of the Companys client base provides it with flexibility to maintain strong operations during economic cycles with the ability to service junior mining companies that typically undertake higher margin exploratory work during periods of expansion and intermediate and major mining companies that are typically better positioned to maintain stable operations during less robust economic periods The following map highlights the locations of the Companys current drilling operations Current Orbit Garant operations Specialized Drilling The Company has developed extensive expertise undertaking specialized drilling programs such as deephole drilling certain complex underground drilling projects directional drilling high altitude drilling heliportable drilling large diameter holes and remote location drilling The Company through its Soudure R oyale subsidiary has designed and manufactured proprietary drills that enable the Company to service customers requiring these and other types of specialized drilling services Approximately 60 of revenue for the twelve months ended March 31 2008 on a pro forma basis was attributable to the provision of specialized drilling services The ability to provide specialized drilling services has resulted in a more sustainable customer and revenue base as a limited number of competitors are able to provide the range of services demanded by mining companies undertaking these projects 31