Yes, crop is hay. Remeber floods I had in 2014? That is the same field that was under half meter of water and now we have drought, no rain in one month, maybe you can see large crack in soil on video. There is definitely something wrong with climates, way to much rain or no rain at all. Weird.
Big machine on picture is power unit for large chain driven filter. Filter plates are mounted on large vertical chain conveyor and this power unit pull them up and lowers them down again and they are washed out while they pass trough this machine. Original was 40 years old and made in Russia, I had to design new one with some improvements since old was incedibly corroded, many parts were literaly nonexisting.
Here are some picture of newer machines i found on interne
Originalets URL: http://www.sereco.it/dtb-immagini/high/Central_flow_band_screen.jpgOriginalets URL: http://www.idm-pirineo.es/IDM/Fr/images/MA/DET15B/tamis-a-chaine-DET15B.jpg