MILLS AND OTHER BUILDINGS at 
buildings, as directed by you, putting about an equal 
number on each floor, and into each crock we put 1% 
pounds sulphuric acid and 2% pounds water. We 
then weighed out 151 pounds of cyanide and put this 
up in manila bags of 1 pound each; each bag was 
tied with a string, upon which was left a loop. We 
placed screw-hooks into different parts of the wood- 
work, spouts, elevator legs, etc., passed through the 
hooks stout twine, so arranged that it would come 
directly over the center of each crock. Just where the 
string passed over the crock we tied an S-hook, on 
which we hung the bags of potassium. 
The stairways leading from the basement to the 
top of our mill go up at the side and nearly at the end 
of the building, one stair directly above the other. 
At the side and the ends of the mill farthest from the 
stairway we started six different lines of string, tying 
one end of each line to the opposite wall, and leading 
each string to the stairway by a different route over 
the floor and tying each string tightly to the stairway 
rail. At the proper moment all the strings on the 
floor could be cut at the same time, and all the little 
bags of cyanide would fall immediately into the solu- 
tion of acid and water. 
Each opening at the stairs had been provided 
with a tight door. The man who cut the strings 
started at the top floor, worked downward, cutting 
the strings on each floor as he passed through and 
closing the door behind him quickly, so that it was 
impossible for even a whiff of the gas to reach him. 
We cut these strings at 8 o’clock Saturday night 
and placed a man on guard all night ‘The odor 
