How Can We Maintain Decanter Centrifuge for Mud Solids Control?

　They were scaling a low ridge between two snowcapped peaks when a shadowcat came snarling from its lair, not ten yards away. The beast was gaunt and half-starved, but the sight of it sent Stonesnake’s mare into a panic; she reared and ran, and before the ranger could get her back under control she had stumbled on the steep slope and broken a leg.
　　Ghost ate well that day, and Qhorin insisted that the rangers mix some of the garron’s blood with their oats, to give them strength. The taste of that foul porridge almost choked Jon, but he forced it down. They each cut a dozen strips of raw stringy meat from the carcass to chew on as they rode, and left the rest for the shadowcats.
　　There was no question of riding double. Stonesnake offered to lay in wait for the pursuit and surprise them when they came. Perhaps he could take a few of them with him down to hell. Qhorin refused. “if any man in the Night’s Watch can make it through the Frostfangs alone and afoot, it is you, brother. You can go over mountains that a horse must go around. Make for the Fist. Tell Mormont what Jon saw, and how. Tell him that the old powers are waking, that he faces giants and wargs and worse. Tell him that the trees have eyes again.”
　　He has no chance, Jon thought when he watched Stonesnake vanish over a snow-covered ridge, a tiny black bug crawling across a rippling expanse of white.
　　After that, every night seemed colder than the night before, and more lonely. Ghost was not always with them, but he was never far either. Even when they were apart, Jon sensed his nearness. He was glad for that. The Halfhand was not the most companionable of men. Qhorin’s long grey braid swung slowly with the motion of his horse. Often they would ride for hours without a word spoken, the only sounds the soft scrape of horseshoes on stone and the keening of the wind, which blew endlessly through the heights. When he slept, he did not dream; not of wolves, nor his brothers, nor anything. Even dreams cannot live up here, he told himself.
　　“Is your sword sharp, Jon Snow?” asked Qhorin Halfhand across the flickering fire.
　　“My sword is Valyrian steel. The Old Bear gave it to me.”
　　“Do you remember the words of your vow?”
　　“Yes.” They were not words a man was like to forget. Once said, they could never be unsaid. They changed your life forever.
　　“Say them again with me, Jon Snow.”
　　“If you like.” Their voices blended as one beneath the rising moon, while Ghost listened and the mountains themselves bore witness. “Night gathers, and now my watch begins. It shall not end until my death. I shall take no wife, hold no lands, father no children. I shall wear no crowns and win no glory. I shall live and die at my post. I am the sword in the darkness. I am the watcher on the walls. I am the fire that burns against the cold, the light that brings the dawn, the horn that wakes the sleepers, the shield that guards the realms of men. I pledge my life and honor to the Night’s Watch, for this night and all the nights to come.”
　　When they were done, there was no sound but the faint crackle of the flames and a distant sigh of wind. Jon opened and closed his burnt fingers, holding tight to the words in his mind, praying that his father’s gods would give him the strength to die bravely when his hour came. It would not be long now. The garrons were near the end of their strength. Qhorin’s mount would not last another day, Jon suspected.

 

 

 

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