Veet. 
(NAV ASAIMCStOIMe stan ha icha eee eran et cn secant ea 50 
(CORSE a ene Ae a Rt A ere Dee eR 24 
(Craw ASA SCOMO ae weil sirens ike ohne col ones elavcnnastuomty ta Aone 420 
(OG Ea ee a IAT fl ts 4 Oi lea, rn AO AN AM Pee Bo 42 
MNO talkscu wean eae RC ee ni tata cw Sete al oa cle ehata as 527? 
The Clallam Bay Field. This field lies in a synelinal trough between Pillar 
Point at Pyscht and Slip Point on Clallam Bay on the Strait of Fuea and 
extends inland about seven miles, but is interrupted on the east and south 
by sharp faults and is truncated at the north by the Strait of Fuca. The coal 
is in the Oligocene-Miocene formation. The formation here consists of six 
hundred feet of coarse, thick-bedded, massive sandstone, interbedded with 
an oceasional bed of conglomerate. In it are also interbedded several workable 
seams of coal. 
This field was discovered in the early 50’s of last century. Of a specimen 
of coal obtained at Slip Point then, Prof. J. S. Newberry gave the following 
analysis :2 
Mixes CaTLWOle rr prs uals nated webs cos MONDE AL ake 46.40 per cent. 
PV Glanle MA DEORE Sikes UNS ce ee as pete al ye: & 50.97 per cent. 
PAS HIBE a Pere aE Te LBs crt Ate atc aN eS bce amma 2.63 per cent. 
AUMGWIE HIS Leo Se Mes ot eee an pe ee 100.00 per cent. 
Later, in about 1865, a mine was opened up 23 miles east of Slip Point, 
known as the Thorndike Mine. At this place there were six leads of coal, 
ranging in thickness from one to three feet, all having a dip of ten degrees. 
The formation was sandstone and the coal seams were found to be from 
twelve to one hundred feet apart. The coal was one of the best coals found 
in the State of Washington. Mining at this time was continued till a fault 
cut off the veins, or they pinched out. 
Coal is now being mined from other locations in the sea-front of the 
same field. The work is being done by the Clallam Bay Coal Company. 
Prospecting in 1904 discovered veins as follows: One seam exposed along the 
coast was forty inches in thickness, another eighty feet stratigraphically 
below this one was twelve inches in thickness, and another, a twenty-two 
2Pacific Railroad Report, Vol. [V, Part II, p. 67. 
5084—27 
