78 GOLD AND TIN DEPOSITS OF SOUTHERN APPALACHIANS. 
The Bumalo cut, 300 feet long and 100 feet wide, lies just east of the Haile cut. It is about 
100 feet deep, but is connected and practically continuous with large underground stopes 
which reach below the 270-foot level. The Beguelin cut, 1,500 feet northwest of the Haile 
cut, consists essentially of two pits, about 120 feet deep, separated by a wide dike of diabase. 
The eastern pit is 200 feet long by about 125 feet wide; the west pit is about 120 feet 
square. Considerable prospecting has been done by diamond drills and well-drilling 
machines, of which a fuller description is given on page 86. 
Among the surface developments may be mentioned a narrow-gage steam tramway con- 
necting mines and mills, a 60~stamp amalgamation and concentration mill, and a barrel- 
chlorination mill, in addition to shaft houses, office buildings, etc. 
Diabase 
Barren quartz vein 
Scale of feet 
o 500 
Fig. 8.— Sketch map showing locution of the principal ore bodies of the Haile mine. A, New Haile 
pit; B, Old Haile pit; C, Bumalo pit; D, Beguelin pit. 
The geology of the Haile mine has often been described, but seldom in detail. Becker a 
and Nitze b give the best descriptions. The country rock is a quartz-sericite schist and is 
described petrographically on pages 15-16. The microscope shows it to have been derived 
by foliation from a porphyry tuff, probably granite porphyry tuff or quartz-monzonite 
porphyry tuff.c These tuffs were well bedded and this structure is preserved in some 
places. About 300 feet northeast of the chlorination mill the tramwa} r cut exposes the tuff 
very plainly bedded in thin layers which on decomposition have assumed different colors, 
causing the banding to appear prominently. At this particular spot the rock has suffered 
only slight foliation, so that although it possesses a recognizable fissility the banding has 
been scarcely disturbed. Tiny cubical cavities lined with limonite indicate that pyrite was 
:;or, 
a Gold fields of the Southern Appalachians: Sixteenth Ann. Rept. U. S. Geol. Survey, pt. 3, 1895, pp. 
5-308. 
b Bull. North Carolina Geol. Survey No. 10, 1897, pp. 125-126. 
cCf. Becker, loc. cit. 
