As far as I can tell there have been only three pitchers with any length to their career that never allowed a grand slam home run:
Joaquin Andujar
Jim Palmer
Gary Peters
Sorry, after further research I have found a more inclusive list:
Pitcher (Home Runs Allowed) (Times with Bases Loaded)
Jim Palmer (303) (213)
Joaquin Andjuar (155) (156)
Doug Jones (86) (149)
Mike Krukow (196) (148)
Harvey Haddix (240) (147)
Paul Lindlad (112) (142)
Paul Assenmachr (73) (142)
Matt Morris (175) (132)
Gary Peters (157) (131)
Mike Boddicker (188) (125)
Click on the link to your right for the answer.
second
60'6"
As of September 7, 2007, 449 different pitchers have give up home runs to Barry Bonds.
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46 feet
fortyfive feet.
35 feet
60
One--Ken Johnson of the Houston Colt .45s. Four other pitchers have pitched eight innings without a hit for the visiting team and lost, but because the home team never batted in the ninth inning these don't officially count as no-hitters.
60 feet.
60 feet