A History of the Ministry of Information, 1939-46
Occupational Group 10: Clay Quarry Workers
Occupational Group 11 : Slate Quarry Workers
Abnormal Dirt , involved in winning stone, clay and slate from the quarries and from working with granite, gravel, tar etc.: from mixture of water with clay, lime etc. in quarries.
Abnormal Perspiration, during the mixing process: when breaking stones: lifting stones etc., on to wagons: sweat rots shirts etc., particularly in hot summer weather.
Abnormal Wear and Tear, due to friction of wielding picks and shovels, lifting, loading and rubbing against heavy stones: clothing rubbed by ropes being hauled up the face of the quarry: during boring and blasting operations. All clothing is worn out quickly by the continual washing which is necessary. Boots are hard-worn on sharp stones and rocks.
Corrosion, due to clothing coming in contact with tar and lime, particularly hazardous in limestone quarries.
Cuts and Abrasions from other sources: from lifting jagged stones: from drilling machines and other machinery.
Dust: from drillers, when loading lorries and wagons, and from breaking and dressing stone.
Oil, Grease and Soluble Oils: From machinery used in blasting, boring and crushing, and from oil used in the mixing process.
Weather. In windy weather dust is blown all over clothing: working out of doors under all conditions necessitates frequent changes of clothing.
Wetness. Tar, lime, gravel, clay, concrete when moistened by the wetness in the pits’ rot boots very rapidly.