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I actually work as a researcher at a laboratory that performs asbestos analysis. Pic related is how samples of various building materials are sliced up and prepared for electron microscopy (SEM-EDS). I'm not sure about the right terms for the materials in english but
>1 is fixing mortar (kiinnityslaasti)
>2 is plastic mat/linoleum and putty (tasoite)
>3 is paint and putty