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Monthly Notes No.13

By “Wig”

WATER TRACING – Phase 3 Results

The latest tests were carried out in the streams that flow into the BURRINGTON area:  Ubley Pot was also traced.  The lycopodium spores were put into the sinks in the first week of April by Dave Drew and the results are as follows: -

SINK

RISING

 

LANGFORD

RICKFORD

UBLEY HILL POT (1)

--

4 hrs. (100%)

ELLICK FARM (2)

4 hrs. (30%)

4 hrs. (70%)

EAST TWIN SWALLET (3)

15-19 hrs. (30%)

4-8 hrs. (70%)

WEST TWIN SWALLET (4)

15-19 hrs. (60%)

17-20 hrs. (40%)

READS CAVERN (5)

43-47 hrs. (40%)

4 hrs. (60%)

The percentage figures represent the proportion of the stream flowing out of the resurgence. All other risings in the area gave negative results.

 

SOUTH WALES. – O.F.D. I

During Easter weekend vandals entered the cave and smashed most of the stal. formations within easy reach. They continued as far as Crystal Pool chamber.  S.W.C.C. are gating all the entrances to the system.

Access to O.F.D. II is to remain controlled.  A limited number of keys will be for visiting clubs.  Write to the Hon. Sec. – John Osbourne – giving at least 14 days notice. 

The connection between O.F.D. I and O.F.D. II just beyond Coronation Aven is still open but very unsafe.

B.E.C. LEADERS for O.F.D. I

The S.W.C.C. have accepted the following members to act as guides for B.E.C. trips to O.F.D. I: -

Roy Bennett, Dave Irwin and Tony Meaden.

N.B.  Leaders are not required for O.F.D. II and O.F.D. III.

DAN-YR-OGOF

During the week after Easter Alan Coase and Dave Judson spent four days underground completing the CRG Grade 6D survey line.  A considerable amount of water tracing was also carried out.  The survey of the Far north (the farthest know point) appears to be far more east than was shown by their earlier survey published by the B.S.A.  The passages seem to end under PWLL DWFN.  Certain parts of the cave rise to within 100ft. of the surface.  It is hoped that a top entrance can be made.

B.E.C. LEADERS for DAN-YR-OGOF.

The S.W.C.C. Committee and the show cave management have accepted the following as leaders for B.E.C. trips to Dan-yr-Ogof: -

Andy MacGregor, Phil Kingston, Kangy King and Colin Priddle.

TUNNEL CAVE

The management of the Dan-yr-Ogof show cave are considering opening up tunnel cave as a second show cave. This presumably means the Davy Price Hall – a 400ft. long passage rarely falling below 25ft. in width and quite well decorated with stal. flows.

STOKE LANE SLOCKER and BROWNES HOLE - new access details.

All cavers visiting these caves should first call at Mr. MARKS at STOKE BOTTOM FARM.

 

EMBOROUGH SWALLET

During the Easter weekend Dave Drew placed a tracer agent in the stream sinking at Emborough Swallet. The result is that the water resurges at Guerney Slade.  The time to reach the resurgence is something in excess of 48 hours.  Whether Keith Franklin and Phil Coles will continue to dig remains to be seen.

Members interested in this subject will find full details of the Eastern Mendip and western Mendip water tracing results by Dave Drew in the club library.  The library is kept at Dave Searle’s at Dolphin Cottage.

G.B.

Those wanting a regular trip into G.B. should contact Roger Stenner as he is collecting water samples once a week, usually on Sunday or Monday, for analysis and measuring temperatures.  The trip takes about 2½ - 3 hours.  Roger is prepared to arrange the trip to suit the rest of the party.

Two people have already asked to come along but anyone else interested should contact Roger as soon as possible.

The purpose of the work is to measure the ability of a stream to dissolve CaCO2 – measuring this on the surface and at several points in the cave to establish changes in this, correlation with discharge, temperature, time of year, etc.

MAESBURY SWALLET

During the Easter Holiday Alan Thomas, ‘Fred’ Atwell and others have been working at the dig.  The latest news is that it’s reached a depth of 20ft.  Still on digs it seems that HILLGROVE SWALLET is on the verge of going!  On Sunday 28th April a sizable rift was opened up in the well known Cornwell manner – bang, bang and more bang!  It looks as if John is near making his triple.