Metal-Rules.com ran a special feature on Finnish speed and thrash metal last year and has just recently updated with part two: http://www.metal-rules.com/zine/index.php?option=content&task=view&id=120&Itemid=54
Part one is here: http://www.metal-rules.com/interviews/Finnish-SpeedThrash-Special-Pt1a-Jan2004.htm