On Tuesday 21 July 1998, Director General Chris Llewellyn Smith unveiled the sign naming the Route Abdus Salam on the Meyrin site.Formerly the southern portion of the Route Pauli, the road passes near the site of the Gargamelle bubble chamber which discovered neutral currents at the PS in 1973. This, CERN’s first major physics discovery, provided the first experimental confirmation of the electroweak unification of which Salam (Pakistan only Nobel Laureate) was a major architect.
The informal scientific co-operation between CERN and Pakistan dates back to the 1960s, through Dr. Abdus Salam. Some theoretical physicists from Pakistan had the opportunity to work at CERN and in 1980s, some of the experimental physicists from Pakistan, specializing in the technique of Solid State Nuclear Track Detectors (SSNTD), also benefited from CERN by exposing the stacks in the beam at the Super Proton Synchrotron (SPS).
In 1997, PAEC signed an agreement for an in-kind contribution worth one million Swiss francs for the construction of eight magnet supports for the CMS detector. The signing of the agreement was followed by the visit of Llewellyn Smith to Pakistan in 1998. The agreement provided an entry point for Pakistani scientists and engineers into the CMS collaboration.. These equipments engineered in Pakistan are also mentioned in this interview.
In 2000, CERN’s new director-general, Luciano Maiani, visited Pakistan, and during this visit another agreement was signed, which doubled the Pakistani contribution from one to two million Swiss francs. This new agreement covered the construction of the resistive plate chambers required for the CMS muon system
Recently, a protocol has been signed enhancing Pakistan’s total contribution to the LHC programme to $10 million.
National Centre of Physics (NCP) of Pakistan is involved in a number of LHC-related activities such as detector construction, detector simulation, physics analysis and Grid computing. Several other Pakistani institutes are also collaborating with CERN indirectly through the NCP. The activities of these institutes cover areas such as software development, manufacturing of mechanical equipment, alignment of the CMS tracker using lasers, and the testing of electronic equipment. 
Above Excerpts taken from article by Dr Ishfaq Ahmed http://cerncourier.com/cws/article/cern/28934