Kieswerke Ohle & Lau GmbH, located in the south-east of Schleswig-Holstein, Germany, is one of allmineral’s longest-serving customers. For more than 25 years, an air-pulsed alljig® gravel jig has been deployed here to ensure reliable and efficient processing of this raw material for the creation of maximum-purity gravel. Capable of extremely precise adjustment, this jig is guaranteed to separate out any organic components and those that react with alkalis. Components that react with alkalis are known to cause a wide variety of problems including serious damage to concrete structures such as bridges and motorway surfaces. This has now been complemented by a cutting-edge alljig®G-1400, which was delivered and installed by allmineral in the second half of 2017 as part of the reorientation and expansion of the gravel works in Büchen-Dorf.