614 THE COLLIERY GUARDIAN. March 19, 1915. Cambrian, ordovician, and silurian systems; an idea backed by unsupported local traditions, and fostered by the slight similarities that some of these older rocks bear to those of the carboniferous system. It has, however, been definitely proved that in South Wales coal does not occur in any rocks other than those .belong- ing to the carboniferous system, and the geology of the Carmarthen and Haverfordwest- districts is now suffi- ciently well known for it to be positively stated that there is not the slightest possibility of coal being detected outside the boundaries of the carboniferous rocks as. .depicted on. the maps. The erroneous impres- sion that coal would be found in the older rocks is one of some antiquity, for, as long ago as 1595, Owen of Henllys, writing, on, “ The Course of the Strata of Coal and Lime in Pembrokeshire,” laid stress on the general association. of limestone with deposits of coal, and in urging the importance of the outcrops of the limestones (Llandilo and Bala) says :—“ Then might my neigh- bours of Pembrokeshire, which dwell directly west of Bletherston and Bullhooke, be somewhat animated to seeke out this hidden good, which would be a joyfull thing unto them.” 'Since this period numbers of profit- less trials for coal have been made in the older.rocks. The dark shales of the Dicranograptus beds, on account of their sooty appearance, and their ferruginous springs, have proved to be especially tempting for such opera- tions. At Camrose two levels about half-a-mile apart have been driven, as if to meet, from either side of the ridge between the Camrose and Knock brooks. Both are much breached, and no one living knows anything of their history. To the east a level was opened with some ceremony, only a few years ago, at Llandowror, but soon abandoned. To the west a level was driven into these rocks for some distance at Druidston Haven. In rocks of other ages' several instances of trials were given in the. Carmarthen memoir, and in addition we may mention a shaft sunk in Redhill beds at Egremont; old workings in boulder clay have been, observed at Morfa-bach, near St. Clears, and only about nine years age- it was seriously proposed to open a colliery on the property.: The underlying rocks are Redhill beds. In the same map, in Bifidus beds, old pits and levels occur at Wodlstone, Llandowror, one being re-opened in 1904, and old pits are visible near Clog-y-fran, in the same neighbourhood, from which local tradition says coal was obtained and used to burn the Clog-y-fran limestone; this, however., is. quite impossible. Trials have been made, also in still older beds. A drift was made as recently, as 1900 in Arenig shales at Llangynog, and pits were sunk in the last century into Tremadoc beds at Cwm-difa, near Llanarthney. The character of the coal of Pembrokeshire is dealt with in a Survey memoir* on “ The Coals of South Wales, with Special Reference to the Origin and Distribution of Anthracite,” where will be found analyses relating to the whole of the South Wales coalfield. AN AMERICAN RESCUE SCHEME. In the United States the organisation of rescue work rests very largely in the ,hands of the Bureau of Mines. In several districts, however, much has been effected by volun- tary effort. '..’A conspicuous example is to be found in the State of Illinois, where the Mine Fire Fighting and Rescue Station Commission has erected stations at Springfield, Benton, and La Salle, as well as two substations. The concise code of rules in operation at these stations was repro- duced in the Colliery Guardian of June 19, 1914 (p. 1412). These rules were drawn up by Mr. Oscar Cartlidge, the manager of the Illinois State Mine Rescue Stations, and he has recently .put forward a scheme to establish rescue stations, somewhat on the Illinois system, under the control of the existing State .Mining Boards or Departments. The plan is to establish in each of the principal mining districts of the State, preferably as near the middle as possible, rescue stations with equipment sufficient for five men, the stations to be built (or rented) .and equipped at the joint expense of the operators and miners of the district. At each .of the said stations there would be a compe- tent man to teach first-aid to miners, assist in organising. the rescue teams, train the rescue teams, and care for the equipment. Two teams of five men each would be main- tained at the stations, to be known as State emergency mine rescue teams. ; The teams would, be given a first course of 10 lessons in mine rescue work,’.and practice of two hours each month thereafter, the expense of first training and later practice to be paid by the 'State.1 It is suggested that a written contract should be drawn up, binding each member of a team to do the required training and practice, and to answer a call to service whenever made, and that State certificates of competency in mine rescue work should be given to those who take the full course; In connection with, his . scheme, Mr. Cartlidge gives some interesting estimates of expenditure :— The estimated expense of erecting a suitable T>ols. station is................. ,.................. 600’00 The estimated expense of equippingit is as follows :— 5 sets of rescue apparatus, at 120 00 dols. ...... 600’00 10 pair goggles, at 1*00ddl. ....................... 10’00 10 electric lamps, at 12’50 dols................... 125’00 1 oxygen pump ........................:........... 175’00 1 resuscitating device .. ... .................... 40’00 1 rectifier for charging lamps................... 15’00 1 meter for testing machines ..................... 32’50 1 first aid box ............................... 6’00 2 stretchers .................................... 10’00 Estimated expense of training 10 men :— 50 Wages 10 men, 4*00 dols per day, two lessons. per day ................................. 200’00 Cost of soda, 8 lb. per day per man at 8 c. per lb. 32’00 Cost of oxygen, 1,500 cu. ft., at 2’40 dols. per 100 36’00 Total cost to train 10 men first 10 lessons... ,i....... - 268’00 Additional cost to train 10 men two hours per month for 12 months Dols. 1 aa .ex _________ «..