ملف رقم ١٧٠٢ لسنة ١٩١٠ الجزء ١ "السكك الحديدية: بلاد فارس؛ خط السكة الحديدية خرم آباد-دزفول-المحمرة" [و‎‎٢‎٦‎٥] (٥٤٦/٢٧٧)

circle round the village and skirt the elopes of ^uh Ohavireh
Shah in a W*S#W. direction, rising steadily to about 6800*
when the hill narrows sufficiently to make a tunnel, in all
probability, economical. There is no break in the Ghavireh
Shah range which the Zagheh-Razan road crosses at 7200* and
the descent on the R. side to the Silakhor plain will be much
more difficult from 7200* than from 6700*, the height at which
I propose the R. exit of the tunnel should be fixed.
I estimate this section to be 15 miles long costing lj
lakhs a mile = 18-J lakhs.
53. Razan Tunnel .
I estimate this to be 2000 yards long: formation lime
stone rock: water plentiful. It might enter the hill on the
south side at 6800* and emerge at 6700* in to the Razan valley.
Cost may be put dov?n at 30 lakhs* I see no way of dispensing
with it: the pass cannot be avoided, and if the railway be car
ried over it to 7200* the drop of 1500* to the Silakhor valley
will be prohibitively steep.
54. Section III. Razan (6700*) head of tunnel to Silakhor plain
(5700 1 ) 10 miles . '
<v
if the mouth ofi the k/z&n side be fixed at 6700 \ the
drop will be 1000 1 : the actual distance between the mouth of
the tunnel and the foot of the hills being less than 5 miles.
The sides of the Razan valley are, on the whole, of a
conformation favourable to the construction of a railway along
them, but whether the east or west side of tiie valley should
be selected is a point which can be settled after a careful
survey«
ny impression is that it v/ill be best to take the line
into the azizabad valley and thence skirt the hills bounding
the bilakhSr plain to the West, descending steadily on a gra
dient of 1 in 50 till the plain is reached at approximately
5700 1 .
This section will call for most careful surveys and a
high