News of another coal mining disaster in Pennsylvania came on the very day of the publication of the report to the Department of the Interior on such ds asters and their causes. The Connells ville explosion yesterday, in which the lives of many miners were sacrificed, resembles in its causes and the extent of its damage the explosion at Monon gah, West Va., last week, and that on Monday at Yolande, Ala. Mr. Houmes, Chief of the Technical Branch of the Interior Department, in commenting on the loss of nearly 93,000 lives through mine explosions in less than eighteen years, says that the in crease of such disasters is due to lack of proper regulations, ignorance, and carelessness—for though his words are more polite, that is what they mean. Coal mining has been largely devel oped of late and the number of men employed in the mines greatly in creased. The Monongah and Connells ville disasters could surely have been prevented. In European coal producing countries legislation for safeguarding the lives of miners has proved effect ive, and three such disasters as we have had within a fortnight will probably induce the mine owners to consider the need of stricter precautions.