The European Muon Collaboration (EMC) was formed in 1973 to study the interactions of high energy muons at CERN. These experiments were motivated by the interest in determining the quark structure of the nucleon following the discovery of high levels of deep inelastic scattering at SLAC. In 1972 two muon beams were proposed for the then new Super Proton Synchrotron (SPS) machine. One by Roger Clifft and Erwin Gabathuler and one by Friedhelm Brasse and Joerg Gayler. The two teams came together to design a high intensity muon beam of energy up to 280 GeV to do the experiments. The collaboration, which became known as the European Muon Collaboration (EMC), was formed around these people to carry out the experiments. A proposal for the beam and an apparatus to do the experiments was submitted to CERN in 1974 (the White Book). The experiments were approved and the apparatus was built between the years 1974–78. The collaboration grew in size to about 100 physicists. This was among the largest experimental collaborations at the time. Several experiments were performed. Each experiment is denoted by a number NAxx where NA is for North Area experiments approved by CERN and xx is the number given to it by CERN. EMC experiments NA2 : Electromagnetic interactions of muons NA2 was a single magnet spectrometer to measure the forward production products of deep inelastic scattering by muons. Data were taken for this experiment in the years between 1978–1981. NA9 : Study of final states in deep inelastic muon scattering For this experiment a second magnet containing a streamer chamber was added upstream of the NA2 apparatus to detect and measure the products of the deep inelastic scattering reactions at wider angles. Further groups joined the EMC for these experiments and the collaboration grew to about 150 physicists. The experiments were performed between 1981–1983. NA28 : Study of shadowing and hadron production in high energy µ scattering using nuclear targets During the NA9 phase, a state of the art (at the time) processor was installed by the University of Uppsala group to trigger on scattered muons at very small angles to the beam (this was the NA28 experiment). This experiment was designed to investigate shadowing in nuclei. From 1984–1985 the experiment reverted to the single magnet spectrometer of NA2 and a large polarized target together with subsidiary nuclear targets were installed. Major results of the experiments The