First, to "Gershon Reed". You are incorrect. I don't know how many nuclear plants do or do not have chimneys, but they are common in Boiling Water Reactor plants. There are many, many radioactive gases given off, but most have short half-lives. The chimneys are designed to let them decay through many half-lives before they are emitted. Second, plants do NOT need cooling towers. What they need is a source of cooling. A nearby river does fine. For examples of a BWR power plant WITH a chimney and WITHOUT a cooling tower, see Brunswick Nuclear Power Plant in Southport, NC, USA.
U.S. asks Uzbekistan to join anti-ISIS coalition (Reuters)
from the article: Inside Intel / Not a reactor - something far more vicious