function findReactors()
  print("Searching for reactors...")
  os.sleep(1)
  numReactors = 0
  for add, _ in component.list("br_reactor") do
    table.insert(reactors, add)
    table.insert(reactorproxy, component.proxy(add))
    numReactors = numReactors + 1
  end
  print("Found " ..  numReactors .. " reactor(s) at:")
  for key,add in pairs(reactors) do
    print(key, add)
  end
  os.sleep(2)
end