ten o'clock
The timber gangs strove like madmen . Each shift was for two hours only , with no pause between , for there were men and to spare . So the day and the night passed . At ten o'clock on Sunday morning , there came a cry -- `` She 's fallin ' again ! '' A tremor ran through the mine . Another shifting of the strata imperilled all the excavation that had been done . A few minutes ' hesitation might have been fatal , but the timber gangs rushed forward , though the props were bending on every side of them and threatened , from second to second , to engulf them in falling rock .