In the Cornish mines about 19,000 men, and 11,000 women and children are employed, in part above and in part below ground. Within the mines below ground, men and boys above twelve years old are employed almost exclusively. The condition of these workers seems, according to the Children's Employment Commission's Reports, to be comparatively endurable, materially, and the English often enough boast of their strong, bold miners, who follow the veins of mineral below the bottom of the very sea. But in the matter of the health of these workers, this same Children's Employment Commission's Report judges differently. It shows in Dr. Barham's intelligent report how the inhalation of an atmosphere containing little oxygen, and mixed with dust and the smoke of blasting powder, such as prevails in the mines, seriously affects the lungs, disturbs the action of the heart, and diminishes the activity of the digestive organs; that wearing toil, and especially the climbing up and down of ladders, upon which even vigorous young men have to spend in some mines more than an hour a day, and which precedes and follows daily work, contributes greatly to the development of these evils, so that men who begin this work in early youth are far from reaching the stature of women who work above ground; that many die young of galloping consumption, and most miners at middle age of slow consumption, that they age prematurely and become unfit for work between the thirty-fifth and forty-fifth years, that many are attacked by acute inflammations of the respiratory organs when exposed to the sudden change from the warm air of the shaft (after climbing the ladder in profuse perspiration), to the cold wind above ground, and that these acute inflammations are very frequently fatal. Work above ground, breaking and sorting the ore, is done by girls and children, and is described as very wholesome, being done in the open air.