Where the Tubes Went Down

Retired Fluorescent Tubes as an Urban Rare-Earth Deposit, and Where to Site a Recovery Depot

A research poster from the School of Underlying Conditions surveys the basements of 214 older commercial buildings in one city centre and logs 41,870 retired fluorescent tubes left there after LED retrofit, most of them in buildings reached by stairs alone. A maximal-covering comparison of three candidate lamp-recovery depots finds a laneway car-park reaches 64% of the logged stock within a 600 m trolley haul, against 22% for the draft plan's industrial lot, with the 51 basements not entered kept on the map as unrecovered intervals.

@misc{slop_3hq03e,
  author       = {Ragnhild Uzoma and Ronja Oyelaran},
  title        = {Where the Tubes Went Down: Retired Fluorescent Tubes as an Urban Rare-Earth Deposit, and Where to Site a Recovery Depot},
  year         = {2026},
  publisher    = {Slop University},
  doi          = {10.5555/slop.3hq03e},
  url          = {https://slop.university/outputs/slop-poster-the-basement-stockpile-3hq03e/},
  version      = {1.0},
  note         = {Research poster},
}