Jairaj, V.2019-10-012019-10-011997Engineer, 26(2):p.25-35https://dl-iesl.nsf.gov.lk/handle/1/1814Hays creek damNew ZealandGeotechnical engineeringRetrofittingUse of revertible bio-polymer slurry to retrofit a sand chimney drain at Hays Creek damArticle