8 
Stringing a mill consists in running stout cords (window cord is good j 
from the ground outside the huilding to various windows on each floor, one 
"set of cords intended for lowering the cyanide, passing into the huilding, and 
the other set of cords so attached to the windows, that the latter can he pulled 
down or lowered, after the process, thus insuring complete ventilation before 
the mill is entered. 
ddie cord hy which the cyanide is lowered into the crocks, after passing 
through a hole in the window casing above the window is continued througli 
a strong screw-eye fastened to the ceiling or beam twelve to fifteen feet from 
the window. Smaller strings, each capable of supporting a weight of eight or 
ten pounds, are fastened to this cord after it has passed through the screw-eye. 
the number of strings attached to all the cords entering a certain story corre- 
sponding to the number of three-pound packages of cyanide to be used on that 
door. These smaller strings run off in various directions, in order that the 
charge may he well distributed, care lieing taken to so arrange them as to avoid 
friction with any machinery. 'These strings pass through convenient screw- 
eyes. each one finally hanging to the door at the point decided upon for the 
placing of a jar. 
'The first screw-eye near the window, through which the heavy cord passes, 
should he large enough to receive two of the heavier cords ; for, in order to 
insure the lowerii%; of all packages, we tie a second cord so that it will not 
slip, securely to the first one. about eight feet from the first screw-eye, toward 
the window, pass it through the screw-eye. and attach a heavy weight to same. 
If the jars have been placed in position, and it is well that they should he before 
the next step, since they enable the workmen to locate at a glance the where- 
al)outs of the perpendicular strings, they must be absolutely empty, the preparing 
of the acid and v.-ater lieing left until later. 
Reliable men are now sent through the l)uilding with the packages of 
cyanide, and tie one package most seen rely to each perpendicular string. The 
package should hang hy its neck a good ten inches above the top of the jar, and 
the men should hear in mind that the string will stretch, and act accordingly. 
'The charges of cyanide being all tied, the next step is to place the water and 
acid in proper proportions in the jars, b'ach jar must first he moved away at 
least three feet from under its charge of cyanide. The Jieeessity for this is ei'i- 
deiit. Careful workmen then pour the right amount of water, six and three- 
fourths pounds for every three pounds of cyanide of potash, or two and a half 
|)ounds of cyanide of sodium, into each jar. 'Then, assuming that a three-pound 
charge of cyanide of potash, or a two-and-a-half-lh. charge of cyanide of sodium 
is used in each, case, four and one-half pounds of the sulphuric acid is added 
to the water in each jar. This must he done with care and every preeaution taken 
to keep all eyanide from proximity of the aeid. The fumes arising when the 
acid is added to the water are in no way dangerous. The next step is to care- 
fully ])lace each jar under its proper package of cyanide, begitining at the top 
story and :eorking dozen. 'The hag should hang at least six inches above its jar, 
but not so high that it will not reach the acid when lowered from the outside 
of the huilding. The string used to sus]Kmd the hags must be strong, and must 
haz'e no zeeak plaees to inz’ite aeeidetits. 
