𝑇ℎ𝑒𝑟𝑒'𝑠 𝑎 𝑡𝑜𝑛 𝑜𝑓 𝑚𝑜𝑛𝑒𝑦 𝑤𝑎𝑖𝑡𝑖𝑛𝑔 𝑓𝑜𝑟 𝑡ℎ𝑒 𝐷𝑢𝑡𝑐ℎ 𝑖𝑛𝑣𝑒𝑛𝑡𝑜𝑟 𝑤ℎ𝑜 𝑐𝑜𝑚𝑒𝑠 𝑢𝑝 𝑤𝑖𝑡ℎ 𝑎 𝑑𝑖𝑠𝑝𝑜𝑠𝑎𝑏𝑙𝑒, 𝑏𝑖𝑜𝑑𝑒𝑔𝑟𝑎𝑑𝑎𝑏𝑙𝑒 𝑏𝑖𝑘𝑒

"A crew has been pulling them out since the 1960s with a hydraulic claw mounted on a boat, and it still lifts about 12,000 a year into a scrap barge."

https://spacedaily.com/m-bicycles-were-once-piled-so-deep-in-amsterdams-canals-that-they-scraped-the-bottoms-of-the-barges-going-over-them-a-crew-has-been-pulling-them-out-since-the-1960s-with-a-hydraulic/