Part 6 (1/2)

The stream of water carrying the lighter sand empties itself into the cyanide vats, and as each successive vat is filled up, the water is allowed to drain through the sand. A solution of cyanide of pota.s.sium is then pumped up and evenly distributed (by distributors) over the sand, and dissolves the gold in its progress, leaving pure sand alone in the vat. The gold-containing liquid (or solution) having left the vat, is led into a series of boxes filled with zinc shavings, the gold separates from the liquid, and settles on the zinc shavings in the shape of a small black powder. The cyanide solution now freed from the gold runs into the solution vats, and is restrengthened and ready for further use.

_Gold Recovery._--In the mill or battery the copper plates are sc.r.a.ped daily, and the amalgams (that is, quicksilver and gold) are weighed and placed in the safe in charge of the battery manager. This amalgam is generally retorted once a week, that is to say, the quicksilver is evaporated (but not lost) and the gold is left in the retort. This retorted gold is then smelted into bars.

The concentrates recovered by the frue vanners are generally treated by chlorination (roasted). This process is gone through so that the iron can be separated from the gold. Concentrates are sometimes treated by cyanide, but the process, if cheaper, is slow and less effective.

Chlorinated gold is also smelted into bars.

_Cyanide._--The gold from the zinc shavings is recovered by retorting.

It is afterwards melted into bars and called 'cyanide gold.'

Slimes (or float gold) are generally conserved in a dam, and when the quant.i.ty is sufficient they are treated by chlorination, or by a solution of cyanide of pota.s.sium.

After treatment all sand is still retained, and is really a small unbooked a.s.set of the various gold-mining companies. The Rand undoubtedly is the best field to-day for students who wish to acquire the details of gold recovery. In no other country has science produced such excellent results. At least 95 per cent. of the gold in the ore can now be recovered, and scientific men from all countries are resident on the fields, and advantageous discoveries in the treatment of various ores are of almost daily occurrence.

STORY OF THE SOUTH AFRICAN GOLD-FIELDS.

There is material for the philosopher in the fact of gold-finding having occurred in connection with a part of the world to which King Solomon the Wise sent for supplies of gold and 'almug-trees,' for the mysterious Ophir has been located in Mashonaland, and the Queen of Sheba identified with the Sabia districts, which, though not in 'the Randt,' are curiously connected with the rise and progress of the mania.

Let us briefly trace that romantic history, merely mentioning by the way that, even in European history, African gold is no novelty, for the Portuguese brought back gold-dust (and negro slaves) from Cape Bojador four hundred and fifty years ago. The ruins of Mashonaland were discovered in 1864 by Karl Mauch, who also discovered the gold-field of Tate on the Zambesi, of which Livingstone had reported that the natives got gold there by was.h.i.+ng, being too lazy to dig for it. When Karl Mauch came back to civilisation, people laughed at his stories of ruined cities in the centre of Africa as travellers' fables, but a number of Australian gold-diggers thought his report of the Tate gold-field good enough to follow up. So about 1867, a band of them went out and set up a small battery on the Tate River for crus.h.i.+ng the quartz. This may be called the first serious attempt at gold-mining in South Africa since the days of the lost races who built the cities whose ruins Karl Mauch discovered and which Mr Theodore Bent has described. A Natal company a.s.sisted the Tate diggers with supplies, and enough gold was found to justify the floating of the Limpopo Mining Company in London. This was in 1868, and was practically the foundation of the 'Kaffir Circus,'

though its founders knew it not. Sir John Swinburne was the moving spirit of this enterprise, and went out with a lot of expensive machinery, only to meet with a good deal of disappointment. The diamond discoveries in Griqualand soon drew away the gold-seekers, who found the working expenses too heavy to leave gold-mining profitable, and for a time the Tate fields were deserted. They were taken up again, however, twenty years later by a Kimberley enterprise, out of which developed the Tate Concession and Exploration Company, to whom the unfortunate potentate Lobengula granted a mining concession over no less than eight hundred thousand square miles of Matabeleland.

Just as the Australians were breaking ground on the Tate, Thomas Baines, the traveller, was making up his mind to test the truth of tales of gold in the far interior, which the Portuguese from Da Gama onwards had received from natives. In 1869 he set forth from Natal with a small expedition, and in 1870 received from Lobengula permission to dig for gold anywhere between the rivers Gwailo and Ganyona. Some seventeen years later this same concession was repeated to Mr Rudd, and became the basis from which sprang the great Chartered Company of British South Africa.

In the course of his journey, Baines encamped on the site of the present city of Johannesburg, without having the least idea of the wealth beneath him, and intent only upon that he hoped to find farther inland.

On the map which he prepared of this journey is marked the 'farm of H.

Hartley, pioneer of the gold-fields,' in the Wit.w.a.tersrandt district.

Hartley was known to the Boers as 'Oude Baas,' and was a famous elephant-hunter, but as ignorant as Baines himself that he was dwelling on the top of a gold-reef. And it was not in the Wit.w.a.tersrandt, foremost as it now is, that the African gold boom began.

While the Tate diggers were pursuing their work and Baines his explorations, a Natalian named b.u.t.ton went, with an experienced Californian miner named Sutherland, to prospect for gold in the north-east of the Transvaal. They found it near Lydenburg, and companies were rapidly formed in Natal to work it. Such big nuggets were sent down that men hurried up, until soon there were some fifteen hundred actively at work on the Lydenburg field. The operations were fairly profitable, but the outbreak of the Zulu war, and then the Boer war, put an end to them for some years.

And now we come to one of the most romantic chapters in the golden history of South Africa, a history which was marked by hard and disheartening days what time the lucky diamond-seekers at Kimberley were swilling champagne, as if it were water, out of pewter beer-pots. There is more attraction for adventurers, however, in gold-seeking than in diamond-mining, for gold can be valued and realised at once, whereas diamonds may not be diamonds after all, and may be spoilt, lost, or stolen, before they can find a purchaser.

It is to be noted that much as the Transvaal Republic has benefited from gold-mining, the Boers were at first much averse to it, and threw all the obstacles they could in the way of the miners. And it was this att.i.tude of the Boers, especially towards the Lydenburg pioneers, that led to the next development.

One of the tributaries of the Crocodile River (which flows into Delagoa Bay) is the Kaap River, called also the River of the Little Crocodile, which waters a wide deep valley into which projects the spur of a hill which the Dutch pioneers called De Kaap (the cape). Beyond this cape-like spur the hills rise to a height of three thousand feet, and carry a wide plateau covered with innumerable boulders of fantastic shape--the Duivel's Kantoor. The mists gather in the valley and dash themselves against De Kaap like surf upon a headland; and the face of the hills is broken with caves and galleries as if by the action of the sea, but really by the action of the weather. Upon the high-lying plateau of the Duivel's Kantoor were a number of farms, the chief of which was held by one G. P. Moodie.

One day a Natal trader named Tom M'Laughlin had occasion to cross this plateau in the course of a long trek, and he picked up with curiosity some of the bits of quartz he pa.s.sed, or kicked aside, on the way. On reaching Natal he showed these to an old Australian miner, who instantly started up-country and found more. The place was rich in gold, and machinery was as quickly as possible got up from Natal, on to Moodie's farm. On this farm was found the famous Pioneer Reef, and Moodie, who at one time would gladly have parted with his farm for a few hundreds, sold his holding to a Natal company for something like a quarter of a million. Then there was a rush of diggers and prospectors back from the Lydenburg district, and the De Kaap 'boom' set in. The beginning was in 1883, and two years later the whole Kaap valley and Kantoor plateau was declared a public gold-field. Two brothers called Barber came up and formed the centre of a settlement, now the town of Barberton. Every new reef sighted or vein discovered was the signal for launching a new company--not now in Natal only, but also in London, to which the gold-fever began to spread (but was checked again by the De Kaap reverses).

Some fifteen Natalians formed a syndicate to 'exploit' this country on their own account. Some were storekeepers in the colony, some wagon-traders, and some merely waiters on fortune. Only eleven of them had any money, and they supplied the wherewithal for the other four, who were sent up to prospect and dig. After six months of fruitless toil, the money was all done, and word was sent to the four that no more aid could be sent to them. They were 'down on their luck,' when as they returned to camp on what was intended to be their last evening there, one Edwin Bray savagely dug his pick into the rock as they walked gloomily along. But with one swing which he made came a turn in the fortunes of the band, and of the land, for he knocked off a bit of quartz so richly veined with gold as to betoken the existence of something superexcellent in the way of a 'reef.' All now turned on the rock with pa.s.sionate eagerness, and in a very short time pegged out what was destined to be known as 'Bray's Golden Hole.'

But the syndicate were by this time pretty well cleaned out, and capital was needed to work the reef, and provide machinery, &c. So a small company was formed in Natal under the name of the Sheba Reef Gold-mining Company, divided into 15,000 shares of 1 each, the capital of 15,000 being equitably allotted among the fifteen members of the syndicate.

Upon these shares they raised enough money on loan to pay for the crus.h.i.+ng of 200 tons of quartz, which yielded eight ounces of gold to the ton, and at once provided them with working capital. Within a very few months the mine yielded 10,000 ounces of gold, and the original shares of 1 each ran up by leaps and bounds until they were eagerly competed for at 100 each. Within a year, the small share-capital (15,000) of the original syndicate was worth in the market a million and a half sterling. This wonderful success led to the floating of a vast number of hopeless or bogus enterprises, and worthless properties were landed on the shoulders of the British public at fabulous prices.

Yet, surrounded as it was by a crowd of fraudulent imitators, the great Sheba Mine has continued as one of the most wonderfully productive mines in South Africa. Millions have been lost in swindling and impossible undertakings in De Kaap, but the Sheba Mountain, in which was Bray's Golden Hole, has really proved a mountain of gold.

The De Kaap gold-field had sunk again under a cloud of suspicion, by reason of the company-swindling and share-gambling which followed upon the Sheba success, when another startling incident gave a fresh impetus to the golden madness.

Among the settlers in the Transvaal in the later seventies were two brothers called Struben, who had had some experience, though not much success, with the gold-seekers at Lydenburg, and who took up in 1884 the farm of Sterkfontein in the Wit.w.a.tersrandt district. While attending to the farm they kept their eyes open for gold, and one day one of the brothers came upon gold-bearing conglomerates, which they followed up until they struck the famous 'Confidence Reef.' This remarkable reef at one time yielded as much as a thousand ounces of gold and silver to the ton of ore, and then suddenly gave out, being in reality not a 'reef'