This proposal plans to investigate the superconducting ground state of the Heusler superconductors with a superconducting transition of ~2K. Heusler compounds have attracted a great deal of interest in spintronics as these materials are considered to be half metals, that is only electrons which have one spin direction have a finite density of states at the Fermi surface. The exchange splitting of the d-electron states makes these Heusler superconductors an attractive prospect for unconventional superconductivity. Previously, we have shown some unusual features of in the muon depolarisation rate (RB1110444). Therefore, we propose to continue of study using the MuSR spectrometer, for 4 days, in both longitudinal and transverse modes to investigate the superconducting ground state of NbNi2Ga.