 Historically, the complex consisted of two launch pads, SLC-36A and SLC-36B, and was the launch site for the Pioneer, Surveyor, and Mariner probes in the 1960s and 1970s.There were a total of 145 launches from LC 36 during the period that the US government operated the launch complex in the first five decades of spaceflight.The Atlas rockets launched from Complex 36 were subsequently superseded by the Atlas V launch vehicle which launches from Complex 41 at Cape Canaveral beginning in 2002.