RUHR, a river of Germany, an important right-bank tributary of the lower Rhine.
HATTINGEN, a town of Germany, in the Prussian province of Westphalia, on the river Ruhr, 21 m.
Still lower down, but before the Dutch frontier is reached, come the Ruhr and the Lippe on the right, and the Erft on the left.
The principal field is that of the lower Rhine and Westphalia, which centres in the industrial region of the basin of the Ruhr, a right-bank tributary of the Rhine.
He was the son of Hugo Stinnes, and grandson of Matthias Stinnes, who was the founder of a firm in no great way of business at Miilheim in the Ruhr district.
In pursuance of this resolve he marched against them early in 775, captured the fortress of Sigiburg on the Ruhr, regained and rebuilt Eresburg and left Frankish garrisons in the land.
The triangular southern portion of Westphalia, most of which is included in Sauerland ("south land"), is a rugged region of slate hills and wooded valleys drained chiefly by the Ruhr with its affluents the Lenne, Mohne, &c., and in the S.
The great Ruhr coal-field extends from the Rhineland into the province as far as Unna, the centre being Dortmund, and there is a smaller coal-field in the N.
Of the Ruhr (1,360,000 tons in 1905) is exceeded in Prussia only by that of the Rhine province.
Iron and steel goods are produced in the so-called "Enneper Strasse," the valley of the Ennepe, a small tributary of the Ruhr with the town of Hagen, and in the neighbouring towns of Bochum, Dortmund, Iserlohn and Altena, and also in the Siegen district.
An active trade is promoted by several trunk lines of railway which cross the province (total mileage in 1906, 1889 m., exclusive of light railways) and by the navigation of the Weser (on which Minden has a port), Ems, Ruhr and Lippe.
Of the numerous tributaries which join the Rhine within the province, the most important are the Nahe, the Mosel and the Ahr on the left bank, and the Sieg, the Wupper, the Ruhr and the Lippe on the right.
Besides parts of the carboniferous measures of the Saar and the Ruhr, it also contains important deposits of coal near Aix-la-Chapelle.
It is navigable all this distance as are also the Neckar from Esslingen, the Main from Bamberg, the Lahn, the Lippe, the Ruhr, the Mosel from Metz, with its affluents the Saar and Satier.
Along the northern border of the folded belt lies the coal basin of the Ruhr in Westphalia, which is the continuation of the Belgian coal-field, and bears much the same relation to the Rhenish Devonian area that the coal basin of Liege bears to the Ardennes.
As in the south of England, the lower beds of the Cretaceous are of estuarine origin and the Upper Cretaceous overlaps the Lower, lying in the valley of the Ruhr directly upon the Palaeozoic rocks.
Ruhr, Frankfort-on-Main, Halle a.d.
WERDEN, a town of Germany, in the Prussian Rhine province, on the river Ruhr, 6 m.
WITTEN, a town of Germany, in the Prussian province of Westphalia, favourably situated among the coal-fields of the Ruhr, 14 m.
From Dusseldorf, between the Rhine and the Ruhr, with which rivers it communicates by a canal.
ARNSBERG, a town of Germany, in the Prussian province of Westphalia, romantically situated on an eminence almost surrounded by the river Ruhr, 44 m.
The territories of the former principality of Cleves and of the countship of Mark (comprising very nearly the basin of the Ruhr), which went to Brandenburg in 1609, must, however, be excepted.