20 years, Ridder (Leninogorsk), Kazakhstan

33 years, Smolensk, Russia

24 years, g. Salair (Gur′evskiy rayon), Russia

32 years, Kharkiv, Ukraine

27 years, Dokha, Qatar

24 years, САЛАИР, Russia

20 years, Russia

28 years, Russia

20 years, Ridder (Leninogorsk), Kazakhstan

30 years, НОВООРСК, Russia

s. Setovnoye (Makushinskiy rayon), Russia

Novosibirsk, Russia

17 years, Russia

11 years, Russia

Moscow, Russia

23 years, Russia

23 years, Krasnoyarsk, Russia

14 years, Russia

21 years, s. Khorol′ (Khorol′skiy rayon), Russia

42 years, g. Taganrog (Rostovskaya oblast′), Russia