The tools employed in working the mines are an iron crow three feet in length, called tabah, a shovel called changkul, and a heavy iron mallet or hammer, the head of which is eighteen inches in length and as thick as a man's leg, with a handle in the middle. With this they beat the lumps of rock till they are reduced to powder, and the pounded mass is then put into a sledge or tray five or six feet long and one and a half broad, in the form of a boat, and thence named bidu. To this vessel a rope of iju is attached, by which they draw it when loaded out of the horizontal mine to the nearest place where they can meet with a supply of water, which alone is employed to separate the gold from the pulverized quartz.
In the perpendicular mines the smooth or gravel-gold is often found near the surface, but in small quantities, improving as the workmen advance, and again often vanishing suddenly. This they say is most likely to be the case when after pursuing a poor vein they suddenly come to large lumps. When they have dug to the depth of four, six, or sometimes eight fathoms (which they do at a venture, the surface not affording any indications on which they can depend), they work horizontally, supporting the shaft with timbers; but to persons acquainted with the berg-werken of Germany or Hungary, these pits would hardly appear to merit the appellation of mines.* In Siberia however, as in Sumatra, the hills yield their gold by slightly working them. Sand is commonly met with at the depth of three or four fathoms, and beneath this a stratum of napal or steatite, which is considered as a sign that the metal is near; but the least fallible mark is a red stone, called batu kawi, lying in detached pieces. It is mostly found in red and white clay, and often adhering to small stones, as well as in homogeneous lumps. The gold is separated from the clay by means of water poured on a hollow board, in the management of which the persons employed are remarkably expert.
(*Footnote. It has been observed to me that it is not so much the want of windlasses or machines (substitutes for which they are ready enough at contriving) that prevents excavation to a great depth as the apprehension of earthquakes, the effect of which has frequently been to overwhelm them before they could escape even from their shallow mines.)
In these perpendicular mines the water is drawn off by hand in pails or buckets. In the horizontal they make two shafts or entries in a direction parallel to each other, as far as they mean to extend the work, and there connect them by a cross trench. One of these, by a difference in their respective levels, serves as a drain to carry off the water, whilst the other is kept dry. They work in parties of from four or five to forty or fifty in number; the proprietor of the ground receiving one half of the produce and the undertakers the other; and it does not appear that the prince receives any established royalty. The hill people affect a kind of independence or equality which they express by the term of sama rata.
It may well be imagined that mines of this description are very numerous, and in the common estimation of the natives they amount to no fewer than twelve hundred in the dominions of Menangkabau. A considerable proportion of their produce (perhaps one half) never comes into the hands of Europeans but is conveyed to the eastern side of the island, and yet I have been assured on good authority that from ten to twelve thousand ounces have annually been received, on public and private account, at Padang alone; at Nalabu about two thousand, Natal eight hundred, and Moco-moco six hundred. The quality of the gold collected in the Padang districts is inferior to that purchased at Natal and Moco-moco, in consequence of the practice of blending together the unequal produce of such a variety of mines which in other parts it is customary to keep distinct. The gold from the former is of the fineness of from nineteen to twenty-one, and from the latter places is generally of from twenty-two to twenty-three carats. The finest that has passed through my hands was twenty-three carats, one grain and a half, assayed at the Tower of London. Gold of an inferior touch, called amas muda from the paleness of its colour, is found in the same countries where the other is produced. I had some assayed which was two carats three grains worse than standard, and contained an alloy of silver, but not in a proportion to be affected by the acids. I have seen gold brought from Mampawah in Borneo which was in the state of a fine uniform powder, high-coloured, and its degree of fineness not exceeding fifteen or sixteen carats. The natives suppose these differences to proceed from an original essential inferiority of the metal, not possessing the art of separating it from the silver or copper. In this island it is never found in the state of ore, but is always completely metallic. A very little pale gold is now and then found in the Lampong country.
Of those who dig for it the most intelligent, distinguished by the name of sudagar or merchants, are intrusted by the rest with their collections, who carry the gold to the places of trade on the great eastern rivers, or to the settlements on the west coast, where they barter it for iron (of which large quantities are consumed in tools for working the mines), opium, and the fine piece-goods of Madras and Bengal with which they return heavily loaded to their country. In some parts of the journey they have the convenience of water-carriage on lakes and rivers; but in others they carry on their backs a weight of about eighty pounds through woods, over streams, and across mountains, in parties generally of one hundred or more, who have frequent occasion to defend their property against the spirit of plunder and extortion which prevails among the poorer nations through whose districts they are obliged to pass. Upon the proposal of striking out any new road the question always asked by these intermediate people is, apa ontong kami, what is to be our advantage?
PRICE.
When brought to our settlements it was formerly purchased at the rate of eighteen Spanish dollars the tail, or about three pounds five shillings the ounce, but in later times it has risen to twenty-one dollars, or to three pounds eighteen shillings the ounce. Upon exportation to Europe therefore it scarcely affords a profit to the original buyer, and others who employ it as a remittance incur a loss when insurance and other incidental charges are deducted. A duty of five per cent which it had been customary to charge at the East India-house was, about twenty years ago, most liberally remitted by the Company upon a representation made by me to the Directors of the hardship sustained in this respect by its servants at Fort Marlborough, and the public benefit that would accrue from giving encouragement to the importation of bullion. The long continuance of war and peculiar risk of Indian navigation resulting from it may probably have operated to counteract these good effects.
It has generally been thought surprising that the European Companies who have so long had establishments in Sumatra should not have considered it an object to work these mines upon a regular system, with proper machinery, and under competent inspection; but the attempt has in fact been made, and experience and calculation may have taught them that it is not a scheme likely to be attended with success, owing among other causes to the dearness of labour, and the necessity it would occasion for keeping up a force in distant parts of the country for the protection of the persons engaged and the property collected. Europeans cannot be employed upon such work in that climate, and the natives are unfit for (nor would they submit to) the laborious exertion required to render the undertaking profitable. A detailed and in many respects interesting account of the working a gold mine at Sileda, with a plate representing a section of the mine, is given by Elias Hesse,* who in the year 1682 accompanied the Bergh-Hoofdman, Benj. Olitzsch, and a party of miners from Saxony, sent out by the Dutch East India Company for that purpose. The superintendent, with most of his people, lost their lives, and the undertaking failed. It is said at Padang that the metal proved to be uncommonly poor. Many years later trial was made of a vein running close to that settlement; but the returns not being adequate to the expense it was let to farm, and in a few years fell into such low repute as to be at length disposed of by public auction at a rent of two Spanish dollars.** The English company, also having intelligence of a mine said to be discovered near Fort Marlborough, gave orders for its being worked; but if it ever existed no trace now remains.
(*Footnote. Ost-Indische Reise-beschreibung oder Diarium. Leipzig 1690 octavo. See also J.W. Vogel's Ost-Indianische Reise-beschreibung. Altenburg 1704 octavo.)