Bisbee daily review., 1911-02-22
[. ]. SNELTER WORK NOST
 ACTIVE
Douglas International

tINuEidS tUlEIudittAAlJ
 The coastructio.. force now em- lployed at the Copper Queen smelter numbers about seventy-five men and ! it will require a force equal to this one, or larger, the remainder of the pres mt year to complete the work quired in the installation Of the reverbatory furnace and McDougal present plant will cover ground space $50 feet long and 100 feet wide. It will consist of two reverba- | tory furnaces 100 feet long and six McDougal roasters.
 1 The work of eXcavating for build ing and machinery foundations, for ! the bins from which the concentrates will be carried by a beltiug elevate system, for the base of the new stack and for a great tunnel into which will come electric slag cars to serve ] the reverbatories has been going on 1 for three months, in connection with | the manufacture of concrete and put i ting it into foundations, retaining walls, etc.
 SIag Tunnel.
 The sIag tunnel required a cut 90 ! feet wide, 15 feet deep and 276 feet | long. The track from this tunnel connects with the same system of tracks which now serve the blast ! furnaces with electric slag cars. ! This slag tunnel Is lined with con crete walls four feet thick and in ! the center is a supporting concrete wall ? feet thick On the top of this tunnel will rest the boiler bat i tery which will supply the required steam for the addition to the smelte- plant There will be four water-tube boilers, each having a capacity or 490 horse power.
 The New Stack.
 l Some idea as to the size and i'm portance Of this work will be had ! from the size of the stack which will be required to accommodate it The base for this stack is 60 feet ! in diameter and an excavation ten ! feet deep of that dimension, has been made. It will require HOO yards Of ! concrete for this base and this con. crete work will start during the next ! few days. The contract for the brick work on this stack has been awarded to the Kellogg Construction 2 pany is expected to be on the job with a force of bricklayers soon af- 1 ter the middle of next month This stack will be 300 feet high and will ! be 22 feet in diameter, inside meas urement, tte walls will be of hollow brick, of special make, which will be manufactured at Ancho, N. M. a station on the Fl Paso & Southwest ern railway. The stack wall will be 35z feet thick at the bottom and one | foot thick at the top and 1,250.00o bricks, or tiles. will 20 into this stack, according to estimate.
 Rooster Foundations.
 The concrete foundations for the six McDougal roasters and for the steel building to accommodate them have been completed and a vast amount of machinery and structural steel is already on the ground. Tha storage bins are of concrete and arc about complete. They will be on a level with and on the east side of the Toasters. The concentrates for which the rcasters are being pro vided will be brought to these bins over an elevated track aud from the bins which are 400 feet long will be taken by a converter belt elevator to the roasters.
 This additional plant is connected with the smelter system of railroad the grade for which comes from the north on the west side to a point about opposite the new stack where the grade is 19 feet high From this point the ore cars will be carried into the works over steel trestes in the same manner as ore cars are now carried to the feed floor of the blast furnaces
 New Dust Chamber.
 An addition to the fiue dust cham her has been completed which covers a ground space of 6000 feet This was built of filing. Connecting with this new chamber is a new converter fiue of immense size, sufficient to Icarry the gases from the eight con verter stands This converter fue is now connected with four of the con verters and will be complete and serving all the converters within the next two weeks. This fiue, where il enters the chamber, is 13 feet In diameter and will be II feet in di ameter at the small end where it re ceives the gases from the first con verter. This fue was manufactured in the East and was erected under the direction of P. J McCabe, con struction formean. This new flew and dust chamber was provided as result of experiments made by su perintendent Lee which lasted for ( year, demonstrating the exact ca pacity required of the dust chamber to make the greatest saving of val ues from the converters before thel passed up the big stack.
 Power House Addition.
 The foundations have been com pleted to accommodate the new elec tric generating machinery which vii
 be installed in the power house ts