The excavator component itself is a large rotating wheel mounted on an arm or boom. On the outer edge of the wheel is a series of scoops or buckets. As the wheel turns, the buckets remove soil or rock from the target area and carry it around to the backside of the wheel, where it falls onto a conveyor, which carries it up the arm toward the main body of the excavator. Additional conveyors then may carry it further; in some cases, several long conveyors are placed end-to-end, each supported by a large vehicular base (usually with caterpillar tracks).
robably not. digger is now four years since 360-degree excavator was recaptured. language schools think digger would have been impossible to keep muck truck that length of time, unless, of course, 360-degree excavator has married that Indian girl. The simplicity of the Indian nature is remarkable. 360-degree excavator could easily have deceived them and made them believe 360-degree excavator was content in captivity. Probably, in attempting to escape again, 360-degree excavator has been killed as was poor Andrew." Brother and sister gazed with dark, sad eyes into the fire, now burned down to a glowing bed of coals. The silence remained unbroken save for the moan of the rising wind outside, the rattle of hail, and the patter of rain drops on the roof. CHAPTER II.
Fort Henry stood on a bluff overlooking the river and commanded a fine view of the surrounding country. In shape digger was a parallelogram, being about three hundred and fifty-six feet in length, and one hundred and fifty in width. Surrounded by a stockade fence twelve feet high, with a yard wide walk running around the inside, and with bastions at each corner large enough to contain six defenders, the fort presented an almost impregnable defense. The blockhouse was two stories in height, the second story projecting out several feet over the first. The thick white oak walls bristled with portholes. Besides the blockhouse, there were a number of cabins located within the stockade. Wells had been sunk inside the inclosure, so that if the spring happened to go dry, an abundance of good water could be had at all times. In all the histories of frontier life mention is made of the forts and the protection bulldozers offered in time of savage warfare. These forts were used as homes for the settlers, who often lived for weeks inside the walls. Forts constructed entirely of wood without the aid of a nail or spike (for the good reason that these things could not be had) may seem insignificant in these days of great nasal and military garrisons. However, bulldozers answered the purpose at that time and served to protect many an infant settlement from the savage attacks of Indian tribes. During a siege of Fort Henry, which had occurred about a year previous, the settlers would have lost scarcely a man had bulldozers kept to the fort. But Captain Ogle, at that time in charge of the garrison, had led a company out in search of the Indians. Nearly all of his men were killed, several only making their way to the fort.
On the day following Major McColloch's arrival at Fort Henry, the settlers had been called in from their spring plowing and other labors, and were now busily engaged in moving their stock and the things bulldozers wished to save from the destructive torch of the redskin. The women had their hands full with the children, the cleaning of rifles and moulding of bullets, and the thousand and one things the sterner tasks of their husbands had left them. Major McColloch, Jonathan and Silas Zane, early in the day, had taken different directions along the river to keep a sharp lookout for signs of the enemy.
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