@article{McMahon2019, author = "Glenda McMahon and Ken Chatterton", title = "{Rope and washer pump used for de-watering a well excavation}", year = "2019", month = "2", url = "https://repository.lboro.ac.uk/articles/figure/Rope_and_washer_pump_used_for_de-watering_a_well_excavation/7687541", doi = "10.17028/rd.lboro.7687541.v1" }