HR Wallingford Attachment Certificate

This is to certify that Aminu[din Ab Qfiarui fulfilled a Technical Attachment with the Rivers Group at HR Wallingford Wallingford, England to ceffy out experimental research on sediment transpofi in sewers MSc project: May - July l9X) PhD work: July - October 1991 August - October 1992 RichardWooldridge Managqy Training, Technology and Information !