sand extraction industry in a lake

activities activity area beauty bottom business colorful company culture daily dekker der dredge dredger dredging dutch economic economical economics economy elst equipment excavation extraction filled firm float floater floaters floating floats flora gelderland geologic geology grit holland industrial industry island kamp kingdom lake landscape life machine machines made management mineral minerals municipality natural nature netherlands orange overbetuwe pebbles pit plants province recreation recreational reserve resort rijkerswoerdse sand scene ship sight site smes spot suck sucking sucks suction surface tool tools trees use using van vessel view village villagescape water waterscape work working world