www.nowotnik.de Group Nowotnik The Nowotnik group of companies currently consists of the following companies: Blatzheimer Sand- und Kieswerke Jakob HG Nowotnik eK Forstdienstleistungen Nowotnik GmbH Jakob HG Nowotnik Road and Civil Engineering Company eK Address of the administration of all companies: Max-Planck-Str. 20 50374 Erftstadt Tel: 02235 - 92713 - 0 The family business has been managed by Jakob Hans Georg Nowotnik since 1998 .