WEST SHORE. 2:17 crane inside the semi-circular trench, and then the castings themselves are lifted out and rolled outside for cooling, and trimming, if there be any small im perfections that can easily be polished off. Then the pipes are tested by being subjected to hydraulic pres sure, varying between 300 and 500 pounds, according to the specifications of the contract which is being filled. If the pipes are perfect they are dipped in tar, and when dry are ready for market. But very few of the castings are condemned, though any imperfection in the iron or inequality in thickness sends tho pipo buck to be broken up and put through the cupola again. In the efliciency of the plant and the general excellence of the product this institution is not excelled by any establishment in the country. The cores about which the metal is run are made in the building. The center is a gas pipe, with nu merous holes in it, so it acts as a flue through which gases generated by the combustion of the hay rope with which it is wound escape. In an adjoining build ing are machines employed in twisting rope which is wound around the center of the core before the coat ing of clay is put on. That earthy mixture is ground by heavy machinery and is about the same as that prepared for ordinary bricks. For the ends and cer tain other portions flour is mixed with it to give it co hesiveness. As the core is made it is turned in a sort of lathe, so the surface becomes perfectly even and of the requisite size for the inside of the pipe to be cast around it. The hay rope next tho iron center of the core burns out from the heat of the metal. Tho cen ter is thus relieved of pressure, so it can be easily with drawn and tho clayey coat of the core crumbles and falls out when the pipo is drawn from the flask. All the lifting and shifting work is done by tho huge steam crane, which is a model machine, capable of handling ten tons at a lift. From the cupola the metal for casting is drawn off into a large vessel called tho ladlo, about the shape of a large iron kettle. The metal is often too hot for casting safely when drawn, and then it is stirred until it becomes sufficiently cool, when tho crano lift and carries the ladlo to tho proper moulds and tho molten metal is poured in. One ladleful is sufficient for sev eral pipes of medium size. Of course, tho ladlo is too hot to handle with tho hands, so it is tipped by means of a screw that holds it in any position desired. At intervals during the casting the cinder is drawn from tho cupola, and when tho day's work is done the bot tom is dropped and cleaned preparatory to receiving tho charge for the next day's casting. Tho lime es caping with tho cinder is blown into fine, glass-like threads, that float in tho air and collect on adjacent projections in a woolly body, somewhat resembling dandelion spikes. This is known as mineral wool, and it has a market value, but tho demand is so light that it docs not pay to save it. The industry thus briefly sketched is tho largest manufacturing plant in Oregon. Tho company owns a largo tract of mineral and timber land about Oswe go, and has a practically inexhaustible ore supply. This ore yields between thirty and forty per cent, of metallic iron. Tho limestone used for llux is brought from llakor county in Kastern Oregon, and the coke from Puget sound. Tho charcoal consumed in the fumaco is burned at the company's kilns a few rods away. There are forty-two of these kilns, which are of tho liee hive pattern. Kach kiln produces about 5,000 bushels of coal wt month, that being tho amount yielded by two fillings of fifty cords each of fir wood. Tho present plant of tho Oregon Iron it Steel Com pany was newly constructed ami placed In alteration almost exactly a year ago. Away back in tho (10'g a mine was opened and reduction works built ami de rated for a few years, tho first iron produced west of the Rocky mountains being turned out there, The , KII.XK. charcoal