488 MLNEaiALS YEAEBOOI~, 1941
 Orient district.—The First Thought Mine Corporation treated about
12,000 tons of siliceous gold ore in its 50-ton cyanidation mill and produced
the bulk of the metal output of the Orient district in 1941.
 Springdale district .—Ore from the Lucky Boy mine (only producer
in the Sprmgdale district in 1941) was treated in the Deer Trail 100-
ton flotation mill and yielded copper concentrates, in addition, a
small lot of ore was shipped crude to Tacoma

WHATCOM COUNTY

 Mount Baker district —Ore from the Boundary Red Mountam mine, treated
by amalgamation, contained most of the gold produced in the Mount Baker district
in 1941.
 Slate Creek district —The bulk of the Slate Creek district output
came from gold ore shipped crude to Tacoma from the Azurite property and
from gold concentrates produced by the Slate Creek Mining Co~ in its 75-ton
flotation mill. A little gold was recovered from placers on Slate Creek by
sluicing.

WHITMAN COUNTY

 Snake River district —A few ounces of gold were recovered from the
Indian Bar placer on Snake River by sluicing

YAKIMA COUNTY

 Summit district —A small lot of copper ore was shipped crude to Tacoma
from the Chinook mine.