In the pit in the Muldsberg district, clay was mined from 1936 to 1996 for cement production by the companies in Breitenburger Portland-Cement-Fabrik, Alsen and Holcim.
The Edendorfer Tonkuhle in the Edendorf district of Itzehoe is a residual open pit lake. Since there are several clay pits in Edendorf, it is also referred to as the …