An expansion to 18Ruhr, allowing players to cut the playable map in half. It also adds the following things:
two new private companies;
mixed Montan companies, allowing both coal and steel mines simultaneously;
new tiles;
the Dortmunder Hafenbahn, an additional (industrial) railway.
Description from the publishers website:
'18Ruhr-Ext 01 is the first expansion of 18Ruhr. The rules of the base game remain unchanged. The most important element of 18Ruhr-Extension 01 is the map overlay. Use the map overlay to create two new, smaller maps. One represents the Western part of the Ruhr area and the Eastern part. Both maps are suitable for 3 to 5 players. In addition, there are two new Private Companies, one new Railway Corporation and four ‘mixes’ MONTAN Corporation. Each of the latter combines both types of industry, as it was the case in reality.
For each map there five new variances which are necessary due to the reduced number of corporations and MONTAN locations.'
For more information see English rules in files section. German and English rules can be downloaded from publishers website.