Graphite play Kibaran Resources (ASX: KNL) has maintained its strong performance, due to high-grade drilling and metallurgical results. The company is one of our preferred graphite sector exposures and its share price has doubled over the course of the past week - but for good reason. It released further outstanding high-grade graphite drilling results on Monday, which followed on from the release over the past fortnight of initial high-grade drilling results, along with ultra-high grade/low impurity metallurgical test-work results. All of this demonstrates that Kibaran has the capacity to produce ultra-high quality graphite from its Epanko deposit in Tanzania, enhancing commerciality, and improving the prospect of further strong share price upside.