Bunker for SCP 2.1 Lower cleaning sieve 'Don' (Akros) 1500B-10B01.04.020 Extension of 'Niva' screen 'Niva' 44B-2-12-4A Screen extension 'Yenisei' KDM 2-12-4 Lower 'Vector' cleaning sieve Vektor upper cleaning sieve Upper cleaning sieve 'Niva' 54-2-12-3 Upper cleaning sieve 'Don' (Akros) 1500B-10B01.06.030 Extension of 'Don' (Akros) 1500 B-10B01.06.050 grate screener Upper cleaning sieve 'Yenisei' KDM 2-12-3