Complex sentence: In the summer of 1952, Dr. Richard Battin and Dr. J. Halcombe "Hal" Laning, Jr., researched computational based solutions to guidance, and undertook the initial analytical work on the Atlas inertial guidance in 1954.
Split into simpler sentences: In the summer of 1952, Dr. Richard Battin and Dr. J. Halcombe "Hal" Laning, Jr., researched computational based solutions to guidance. Hal Laning and Richard Battin undertook the initial analytical work on the Atlas inertial guidance in 1954.