Shares of Rubicon Minerals (TSX:RMX,NYSEMKT:RBY) jumped nearly 11 percent on Thursday after the release of additional drill results from the 38,000-meter infill drilling program currently taking place at the company's Phoenix gold project. The goal of the program is to convert inferred mineral resource ounces in the upper part of the F2 deposit to the indicated category at 25-meter drill spacings or less. The company is currently 21,983 meters, or 124 holes, into the program, though altogether it's completed an impressive 377,594 meters of drilling on the deposit since 2002. Highlights from today's release include: Hole 244L-69: 136.5 grams per tonne (g/t) gold over 4 meters Hole 244L-83: 61.2 g/t gold over 2.6 meters Hole 244L-63: 34.8 g/t gold over 2.5 meters Hole 244L-39: 20.6 g/t gold over 5 meters, including 32.7 g/t gold over 3 meters Positive reactions Commenting positively on those results, President and CEO Michael A. Lalonde said, "[i]nfill drilling results to-date continue to confirm our expectations of the F2 Deposit with respect to the continuity of mineralization and grade." He added, "[w]e continue to encounter potential economic intercepts outside of planned stoping blocks, which could expand the mineral resource in the upper levels of the deposit. We have also encountered visible gold with significant grades in a number of holes between sections 50125N and 50250N in areas that previously had limited information." He's not the only one who's pleased with today's numbers. Seeking Alpha contributor Hard Asset Investments was blown away by the results, commenting, "I think Rubicon's current share price is actually below what it should be, given the recent bullish developments." Meanwhile, Ben Kramer-Miller, also writing for Seeking Alpha, described the results from hole 244L-69 as "an incredible grade."