operational sites has been one of the founding bases for the company since its establishment more welcome to challenger limited challenger limited a private company limited by shares was established in 1991 in the isle of man . the company is a contract oilfield drilling and work over services provider . starting with just nine rigs during its inception challenger now operates 29 rigs 25 of which are under long term contracts in libya . challenger employees count for more than 1300 in various specializations including but not limited to onshore drilling and work over techniques mechanical and electrical engineering preventative maintenance qhse legal and contracts financial and banking human resources and it . more ... newsletter sign up latest news 10 09 in october 10th 2009 . challenger limited recieved the workd finance magazine 2009 award as the best drilling contractor more ... 01 08 challenger limited reached a definitive agreement with bronco drilling company inc whereby the latter acquired a significant stake 25 % in challenger more ... our mission challenger s main mission is to be acknowledged by our valued customers as the most professional company distinguished by its wide variety of services consistent with he international standards of health safety and environment practices through the company s quality management principles . the unlimited innovative series of services whether drilling or work over services more our clients with the capability of providing various services consistent to each of our clients demand challenger limited has been enlarging its clientele base and expanding the area of its services more 2010 challenger limited . all rights reserved .