Abstract
As mining industry is moving toward automation and increasing the efficiently in production, drilling condition monitoring is a vital step forward. Drilling and blasting are two preliminary tasks in surface mining and Tricone bits are preferred in most rotary drilling applications for blasthole drilling. Bit health condition affects the drilling performance significantly and the total drilling cost consequently. In addition, the determination of the best time to change the bit is a crucial issue to avoid bit catastrophic failure during the operation and subsequent costs in the operation. Finally, a successful bit condition monitoring system is a necessary part of autonomous drilling.