Glenmorangie's water source is the Tarlogie Springs, situated in the Tarlogie Hills above the distillery. Barley grain is supplied by Highland Grain Ltd, a co-operative of farmers in the area. The stills used, the tallest in Scotland at tall, with necks, are claimed by the company to produce an extremely light taste. The distillation process was for decades undertaken by a staff of 16, known as "The Sixteen Men of Tain", who worked year round, with the exceptions of Christmas and periods of maintenance. Expansion of production since 2008 has led to a larger staff of 24, who are now referred to on bottles and in promotional leaflets just as "The Men of Tain".