A method of producing a salt composition comprises comminuting a first particulate fraction comprised of sodium chloride crystals having a mean particle size by volume of at least 500 μm, in the presence of a second particulate fraction which is a salt product comprised of particles which contain (a) sodium chloride and (b) an organic material that is a solid at ambient temperature. The particles of the second particulate fraction have a structure comprised of individual crystallites of sodium chloride attached together in the particles of the product wherein at least 95% by volume of the particles of the salt product have a size less than 100 μm and wherein particles of the product comprise hollow particles formed of an outer shell of said crystallites. A method of producing a salt composition comprises comminuting a first particulate fraction comprised of sodium chloride crystals having a mean particle size by volume of at least 500 μm, in the presence of a second particulate fraction which is a salt product comprised of particles which contain (a) sodium chloride and (b) an organic material that is a solid at ambient temperature. The particles of the second particulate fraction have a structure comprised of individual crystallites of sodium chloride attached together in the particles of the product wherein at least 95% by volume of the particles of the salt product have a size less than 100 μm and wherein particles of the product comprise hollow particles formed of an outer shell of said crystallites. A light fitting (10) comprises an outer housing (11) and an inner support (12) which is supported by the outer housing, said inner support comprising a rear face (30) and a front face (31) to which a solid-state lighting device (13) is secured in good thermal contact therewith, the rear face of the inner support being devoid of an attached heat sink and the inner support serving, in use, as the primary heat sink for dissipation of heat generated by the solid-sta
