Aug 11 (Reuters) - Mastermyne Group Ltd MYE.AX
* Awarded development contract at Whitehaven Coal Limited's Narrabri mine
* Company will deploy a continuous miner and ancillary development equipment from its own fleet for project
* Company has been engaged to undertake roadway development in gate roads, including initial set up work and conveyor installations
* Contract to employ 55 full time personnel; has projected duration of 18 months; to generate revenues of $33 million over life of contract