* together you decide whether to begin work. * either a set number of sessions, usually once weekly, lasting 50 minutes for one to one counselling and one and half hours for group therapy. * or you agree to work together ongoingly with a commitment to giving a minimum of one months notice that you will end the work.
Needle coke, also called acicular coke, is a highly crystalline petroleum coke used in the production of electrodes for the steel and aluminium industries and is particularly valuable because the electrodes must be replaced regularly. Needle coke is produced exclusively from either FCC decant oil or coal tar pitch.
What you're referring to is a mostly nonsense but with a grain of truth story. There is such a thing as low-background steel. That is steel that was produced before the nuclear explosions from 1945 and later (nuclear tests) raised the level of radioactive dust in the atmosphere. The process of making steel involves blowing air into a furnace. That air can be contaminated with radioactive dust.