Bacteria: one type improves properties of construction materials; another type 'eats metal' from mining waste

Two Articles:

Bacteria could help build eco-friendly construction materials
https://www.bath.ac.uk/announcements/bacteria-could-help-build-eco-friendly-construction-materials/

"bacteria-based construction technology (BBCT)... exploit the natural biofilm-forming abilities of bacteria to function as a kind of glue that will help improve... Their biodegradable plasterboard... Breathaboard uses compostable crop waste instead of gypsum, is lighter and has better thermal and acoustic insulation compared with traditional plasterboard... six-month pilot project that aims to optimise the properties"
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Chilean scientist plans to clean up mining with 'metal eating' bacteria
https://news.yahoo.com/chilean-scientist-plans-clean-mining-012602594.html

"Some metals can be recycled in smelting plants but others... cannot and are often discarded in Chile's Atacama desert... Starving... iron-oxidizing bacteria called Leptospirillum... [a type of] extremophiles... microorganisms capable of surviving in extreme conditions... have already managed to "eat" a nail in just three days... After biodisintegration... the liquid residue can be used to extract copper from rock in a more sustainable manner than the current use of chemicals in leaching"

Related: Sustainability-In-Tech : Emissions-Free Iron Created While Cooler Than Coffee!

https://use-it.co.uk/use-it-news/technology-news/sustainability-in-tech-emissions-free-iron-created-while-cooler-than-coffee/