David Kercher

David Kercher, Retired Mechanical Engineer at General Electric, has been recognized by Marquis Who’s Who Top Engineers for dedication, achievements, and leadership in mechanical engineering.

David Arthur Lienhart

David Arthur Lienhart, Geologist, Consultant, Laboratory Director at DAL Engineering Geologic & Petrographic Services, has been recognized by Marquis Who’s Who Top Engineering for dedication, achievements, and leadership in geology.