Stock to Watch Sheffield Resources (ASX: SFX), which has hit an all-time high as it drills a large EM target in the Fraser Range of WA. The company's most exciting project at present is its world-class Thunderbird mineral sands project in Western Australia, which hosts a large, high-grade zircon-rich resource and where Sheffield is targeting first production during 2017. There's also strong interest in its Red Bull exploration project in the prospective Fraser Range province of WA, where it has announced the commencement of diamond drilling to test a large, strong bedrock conductor (RBD1) at its Red Bull nickel-copper project, just 20km from Sirius Resources' Nova deposit. Drilling will take 2-3 weeks.