In 1972, Haupt observed a giant enhancement of proton polarisation in NMR experiments on crystalline g-picoline. Key to this discovery was the implementation of quick temperature cycles over the temperature range T=4-50K. The enhancement of nuclear dipolar order was estimated to be of order 1000-10000 and it could persist over periods of hours. Whereas it is generally agreed that methyl quantum rotors are at the heart of the Haupt effect, no model can explain all the available phenomenology. Motivated by the above, we propose to use OSIRIS to measure the relaxation kinetics of nuclear-spin populations in g-picoline under 'Haupt' conditions. These measurements will clarify important and pending issues about the underlying mechanism of the Haupt effect, as well as explore the potential of such hyperpolarisation schemes in neutron scattering.