Based in the Netherlands, ENCI is a division of HeidelbergCement active in the Benelux countries. It possesses three main production facilities in the Netherlands, of which the biggest is the integrated production plant in Maastricht. ENCI has been generating cement from Maastricht since 1926, and directly employs 212 people. There, the full cement production process is realised, as limestone is extracted from the 135-hectare quarry and burnt in a kiln to make clinker, which is then ground into cement. ENCI has two further sites in the west of the Netherlands- in IJmuiden and Rotterdam - both of which are grinding plants, where clinker is supplied rather than produced. In the integrated site in Maastricht, mainly Portland cement is produced, while the two grinding plants in the west of the country are solely focused on blast furnace cement.