As he opened the door and she caught a glimpse of the music room, he heard her sharp intake of breath.
She ignored his quick intake of breath and surprised expression.
"Does Gabe …" Her sharp intake of breath stopped him.
He heard a slight intake of breath and wondered if she felt the same spark.
The difference in level between the outcrop of the assumed eastern intake and of the wells is often so small, in comparison with their distance apart, that the friction would completely sop up the whole of the available hydrostatic head.
These show that a definite intake of carbon dioxide is always accompanied by an exhalation of an equal volume of oxygen.
In any case whether natural or artificial means be employed, a mine can only be ventilated properly when it has at least two distinct openings to the surface, one an intake or " downcast," the other a chimney serving as an " upcast."
The actual conveyance or coursing of the air from the intake to the working faces is effected by splitting or dividing the current at different points in its course, so as to carry it as directly as possible to the places where it is required.
From the experience of such workings it is considered that 1 soo metres would be a possible workable depth, the rock temperature being 132°, and those of the intake and return galleries, 92° and 108° respectively.
He caught her sharp intake of breath and gave her a rakish smile as she blushed.
Below the bottom of the lake, from an intake situated a distance of 26,500 ft.
This is effected by carrying through the workings a large volume of air which is kept continually moving in the same direction, descending from the surface by one or more pits known as intake or downcast pits, and leaving the mine by a return or upcast pit.
By the adoption of more refined methods of construction, especially in the shape of the intake and discharge passages for the air and the forms of the fan blades, the efficiency of the ventilating fan has been greatly increased so that the dimensions can be much reduced and a higher rate of speed adopted.