Alpha Engineering Services will be hosting Basic & Advanced Topics in Mine Ventilation Seminars for the professional, practitioner and other interested persons on April 23 & 24 in Beckley, WV and May 13 & 14 in Evansville, IN.  These seminars will provide an opportunity for introducing, refreshing or upgrading skills and concepts of mine ventilation for the engineering and technical professional and those who have an interest in the practical aspects of mine ventilation.  For additional information, contact Ellen at Alpha Engineering:  304-255.4131 or This email address is being protected from spambots. You need JavaScript enabled to view it..