Origins Prior to 1743 coal had been mined in Little Govan, close to Glasgow. When that working ceased, the price of coal in Glasgow rose considerably, doubling by 1760 (from between 1/1 and 1/3 per cart of 7 cwt), to between 2/1 and 2/6. (1
cwt = 112 lb or 51 kg). Available coal was mined in Lanarkshire, but, before proper roads were built, the cost of transport by horse and cart was a significant factor. When the Trades House of Glasgow protested, one member cited another cause: that the coal masters had combined to keep prices high; he asserted that the price ought not to exceed 1/6, including 6d for cartage and tolls. The inventor and engineer
James Watt said later that Monklands was "a country full of level free coals of good quality, in the hands of many proprietors, who sell them at present at 6d per cart of 7 cwt at the pit". By 1768, the rapid growth of Glasgow had vastly increased the demand for coal, and its price: several bodies expressed concern, and the magistrates of Glasgow took action. The
Lord Provost was
James Buchanan of Drumpellier, and the rich Monklands coalfield was practically untapped. Canals were being promoted all over the country, and seemed to be the obvious solution here; the magistrates commissioned James Watt to recommend a route. In November 1769 he reported back, suggesting two possible routes; one was expensive, at more than £20,000, entering the Clyde at
Glasgow Green. Its route involved 25 locks, with a summit above the level of the Clyde. Watt said: The Great expense of the above canal and the time that would be consumed in passing the locks ... have made me examine how far it is practicable to bring a canal without any locks ... I find that it can be brought to within a little more than a mile [1.6 km] of the town and that a waggon way or good causeway can be made for the remainder of the way. [This route] ends a little south of Jermiston, there appearing to be no possibility of bringing it near Glasgow on that level." This proposal seems to ignore completely the major problem of the of vertical interval at Blackhill, an obstacle that was to cause serious problems later. On 3 January 1770 the cheaper scheme—at £10,000—was laid before a meeting of business people, and following a second meeting on 11 January a subscription list was opened. The Town Council of Glasgow agreed to subscribe £500, with a complicated precondition designed to prevent the coalowners forming a cartel to keep prices high. The subscription list was swiftly filled, and the necessary act of Parliament, the '''''' (
10 Geo. 3. c. 105) was secured on 12 April 1770. The Lord Provost was refunded "£65 as half of his charges in going to and coming from London anent obtaining the Act of Parliament ... the other half of such expense being chargeable on the proprietors of the Monkland Canal". The act allowed the proprietors to raise £10,000 by issuing shares, and an additional £5,000 if necessary. Water for the canal was to be extracted from Frankfield Loch,
Hogganfield Loch, and any other streams or lochs within of the proposed route which were not already supplying the
Forth and Clyde Canal. The requirement in the act to take water only from a narrow geographical area, and the prohibition on taking water from sources that fed the Forth and Clyde Canal resulted in continuing water shortage problems later.
Construction starts under James Watt The construction process was very difficult and protracted. It was supervised by Watt, with work beginning on 26 June 1770 at Sheepford, working westward. He experienced severe weather and difficult ground, writing in December 1770: Notwithstanding the desperate weather I am almost constantly at the canal ... I have a hundred men at work just now, finishing a great hill we have wrought at this twelvemonth. The nastiness of our clay grounds is at present inconceivable; the quantities of rain have been beyond measure. Our canal has not stopped, but it is likely to do so, from our having expended the subscription of [£10,000] upon of the navigation, and having about yet to make. We have, however, made a canal of four feet water for one of three feet subscribed to, and have also paid most abominably for our land. It is clear that he made the canal deep, more than originally specified by the proprietors; this followed a visit by the engineer
John Smeaton on 28 July 1770. Smeaton "pointed out that the depth of the canal could with advantage be increased to four feet ... without any additional excavation, and the General Meeting of the proprietors three days later agreed to this". Thomson mentions that this has been overlooked by many writers, including Leslie, but Lewis stated with a width of at the surface, diminishing to at the bottom. The canal was broad, suitable for boats measuring up to . (Dougal's wharf was at Easterhouse; the reservoir was a temporary one at The Flatters near Drumpellier.
Stagnation, and the departure of Watt Jams Watt appears to have severed his connection with the canal from July 1773; at that time there were of canal dug westwards from Sheepford to Gartcraig. Detail of the activity in the next decade and a half are more sketchy. It seems likely that the initial money subscribed had run out without the canal being completed, and the financial climate made it difficult to continue, and that the company terminated Watt's employment. Not much coal seems to have traversed the part of the canal that was open, so that quite apart from the shortage of capital to continue construction, the company was making an operating loss and was unable to pay its debts. An extraordinary general meeting was called on 3 May 1780, at which those present decided to make a call of 10% on all shareholders. This was a difficult time to ask for money, as the
American War of Independence (1775–83) had ruined many of the Glasgow businesses, dependent on the American tobacco business. Moreover, asking for more money to keep a bankrupt business going was inopportune. At this time a remark was made, facetiously suggesting filling the canal in. Miller tells the tale: ... for many years, the revenue derived was so trifling, compared with the great outlay of capital, that the shareholders almost despaired of its ever proving a profitable investment. It is said that in 1805, when the annual meeting of shareholders took place, presided over by Mr Colt of Gartsherrie, at the conclusion, murmurs of dissatisfaction prevailed among the members at the very cheerless report. Many propositions were made, and, after discussion, abandoned. At last a question was put to the chairman as to what he thought should be done; he replied, "Conscience, lads! the best thing we can dae, is for ilka ane o' us to fill up the sheugh on his ain lands and let it staun." Miller dates this at 1805, but Thomson is sure this must have been about 1781. Several writers have taken this as a serious proposal, including the engineer James Leslie in a respected journal. Of course filling in the canal would not have retrieved the money expended in digging it. As a result of the financial crisis, the funds were not forthcoming and it was decided to sell shares by roup (public auction) on 14 August 1781; presumably these were forfeited shares (i.e. not additional shares). The shares taken up were heavily discounted and not all were taken; the final eleven shares were advertised in the
Glasgow Journal on 21 March 1782. The canal then consisted of two sections, from Sheepford to Townhead, interrupted by the inconvenient connection at Blackhill, where coals were moved between the two sections by use of the incline: this seems to have been no more than a slope surfaced either for road wagons or provided with rails. The coal was transhipped from barge to waggon and from waggon to barge. Thomson says that there "is no means of ascertaining the nature of the proposed junction at Blackhill. Supplies of water were so meagre that locks were certainly out of the question and in all likelihood they used some modification of Watt's scheme for letting waggons down an incline, the descending waggons pulling up the unloaded waggons". , writing later, says, "The communication between these levels was at that time carried on by means of an inclined plane, upon which the coals were let down in boxes, and re-shipped on the lower level."
Andrew Stirling initiates progress Returning to 1786, the proprietors of the canal realised that the Blackhill discontinuity had now to be overcome; moreover the best coalfields lay a couple of miles east of Sheepford. An extension east involved locks there with a vertical interval of . The two groups of locks would vastly increase the requirement for water; this was readily available in the River Calder, but the Monkland Canal Act 1770 had forbidden the abstraction of any water that might later be claimed by the Forth and Clyde Canal, and that canal was itself considering an extension which would require the water. Andrew Stirling and John Stirling had between them 46 out of 101 shares in the company, and "Only the Stirlings (and particularly Andrew Stirling) were alive to the commercial possibilities". A way forward was explored, and it emerged that both canals could benefit, if the Monkland took the Calder water and also made a connection to the Forth and Clyde near Townhead; that canal had a branch from its main line to this point to serve local factories. This was at the highest level on the Forth and Clyde Canal, and therefore the entire Forth and Clyde Canal would be fed by the Monkland Canal. This arrangement was ratified by the Monkland proprietors at a general meeting on 8 January 1787. Nonetheless, the canal's finances were difficult: from 1782 to the end of 1789, the company had a gross income of £853 17s 5d and had expended £29,966 5s 3d: a loss of £28,112 7s 10d, and at the end of that period most of the individual shareholders had sold out, so that Andrew Stirling was the owner (personally or through his company) of over two thirds of the canal.
The new works are undertaken The extension to the River Calder was to cost £2,857 5s 0d and the locks at Blackhill £3,982. The cut off junction was to be funded by the Forth and Clyde. The cut off junction was opened on 17 October 1791; at four feet deep it was the same as the Monkland Canal, although the main line of the Forth and Clyde was deeper. The extension to the Calder was completed in 1792 at a cost of £3,618 16s 3d, a 26% overspend. The Blackhill locks took much longer, being completed in August 1793 although Thomson says (1794). There were four double locks, (i.e. two chambers with three pairs of gates,) each double lock having two falls of ; the total vertical interval was .
More prosperous times Now at last the canal had an efficient means of fulfilling its original purpose: conveying coal from the Monkland pits to Glasgow. Talking of East Monkland in 1792, a writer says that "Twenty years ago coal sold so low as 6d. the cart load; but since the Monkland Canal was opened, it sells at 18d. the cart weighing 12 [long] cwt [610 kg]." In other words, coal extracted at Monkland now found a lucrative market in Glasgow. Meanwhile, the principal users of the canal, the owners or tacksmen, necessarily working deposits close to the canal, reduced in number. In 1793 the Statistical Account comments that the canal is unfinished, but adds: The canal trade is at present as follows: Stirling also brought 3,000 carts of dung and lime in to his agricultural estates. In subsequent years, Stirling further expanded his activity and by 1802 he was paying 75% of the tonnage dues on the canal. In 1828 a rival company claimed that the Monkland Canal had "for many years yielded a dividend of Cent. per Cent ... arising solely on its Tolls on coal". The iron industry was given a considerable boost when Blackband ironstone was discovered by
David Mushet near Coatbridge in 1805 or 1806. The
hot blast process of iron ore smelting was invented by
James Beaumont Neilson, introduced in 1828. Several large ironworks were established in the Coatbridge area, seven blast furnaces in 1830, rising to 46 by 1840. These developments led to a vast and rapid increase in the industrial development in the Coatbridge area, focused on iron production and iron manufacturing. This led to a huge increase in demand for iron ore and coal from the pits in the area, and the Monkland Canal was able to transport it: coal carried in 1793 had been 50,000 tonnes, rising to a million tonnes by 1850. The
Garnkirk and Glasgow Railway opened in 1831 and linking with other railways, it was the first railway that directly competed with the canal. Fearing disaster from this competition, "the company reduced their dues to about one-third of the rate which had been charged up till that time". iron-works near Airdrie, about a mile [1.6 km] in length; another to Dundyvan iron-works, extending to about a quarter of a mile [400 m]; and a third to Gartsherrie works, about a mile [1.6 km] long." ==Decline==