*begin Polldubhmiddle
;Cave:Polldubh
;Survey Name:Polldubh Middle
;Description: downstream from B3a to junction PD South & PD North
;
;Location: The County Clare
;Country:Rep of Ireland
;People - GMBond, DPatmore, JJPClokie, TJHill
;Date: 10 July 1963
;Instrument Set: RAF Handbearing Compass No 39306 H
;metal reinforced linen tape
;Calibration:
;Typed in by Graham Mullan June 2007
;Adjusted for computing by Survex by Graham Mullan,2007 
;passage dimensions omitted from this version
;Source: UBSS July 1963
;The Midland Series Exercise Book (red) 
;Polldubh North (other lettering crossed through)
;
*DATA Normal From to Length Bearing ignoreall
*UNITS tape feet
;Leg	Length compass

*CALIBRATE Compass +8

0	1	28.5	205
1	2	20	195
2	3	22	217
3	4	27	196
4	5	16	224
5	6	56	174
6	7	29	212
7	8	21	256
8	9	17	213
9	10	13	230
10	11	6	288
11	12	11	264
12	13	22	200
13	14	11	270
14	15	20	216
15	16	14	242
16	17	11	245
17	18	20	271
18	19	23	244
19	20	8.5	190
*DATA Normal From to Length Bearing Gradient ignoreall
20	20a	20	0	-90

*END Polldubhmiddle