May 4 (Reuters) - Ur-Energy Inc URG.A :
* UR-ENERGY RELEASES 2018 Q1 RESULTS
* Q1 SALES C$19.7 MILLION
* FULL YEAR 2018 GUIDANCE, SIMILAR TO 2017, ESTIMATES PRODUCTION OF BETWEEN 250,000 AND 300,000 POUNDS
* MARKET FUNDAMENTALS HAVE NOT CHANGED SUFFICIENTLY TO WARRANT ACCELERATED DEVELOPMENT OF MU2
* EXPECT TO BRING THIRD MU2 HEADER HOUSE ON LINE IN Q2