Stephen McIntyre – mathematician, mineral prospector, mining engineer and blogger with Climate Audit.
came to prominence in his criticism of Mann’s hockey stick.
Stephen McIntyre and Ross McKitrick (2005). “Hockey sticks, principal components, and spurious significance”. Geophysical Research Letters 32 (3): L03710. Bibcode 2005GeoRL..3203710M. doi:10.1029/2004GL021750. [from wikipedia]