UPDATE 1-First-quarter profit rise at Sweden's Sandvik marred by mining miss

STOCKHOLM, April 24 (Reuters) - Swedish engineering group Sandvik beat first-quarter operating earnings expectations on Tuesday boosted by strong results in its metal-cutting tools business, the group's main profit generator. But results in its mining gear business were slightly weaker than anticipated, taking some of the shine off the overall beat and sending shares lower after an initial rise.