depth at which the tion, lift pump is placed, to one end of the “The remarkable feature of the El- steem cylinder, and the force of the re- lershausen process is that absolutely sistance to be overcome to the other end no skill is required to carry it out. The of the cylinder, until the desired… … from the force pump, in the one case, or iron and ore. This intimate mixture is also the essence of the by withdrawing the coupling key which Bessemer process. In fact, to Mr. Bessemer’s original apprehen- connects the lift pump rod, in the other sion of this idea of intimate mechanical mixture,…
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