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