Letter 110: Transparency, gone up in a puff of smoke

Dear Dave,
Dearie me. First Andy Coulson, now Lynton Crosby. Pure coincidence I'm sure, but once again, it does appear that money talks for your Conservative led government. How worrying that the interests of big business takes priority over the health of our children.Whatever happened to your pre election promise of cleaning up politics?Transparently, it's disappearing like a puff of smoke... 
Yours, etc

List of ingredients found in cigarettes:
Acetone (solvent)
*Naphtylamine
Methanol (used as rocket fuel)
*Pyrene
Naphtalene (moth repellant)
Nicotine (used as a herbicide and insecticide)
*Cadmium (used in batteries)
Vinyl chloride (used in plastic materials)
Carbon monoxide (found in exhaust fumes)
Cyanhydric acid (was used in gas chambers)
Ammoniac (detergent)
*Urethane
Toluane (industrial solvent)
Arsenic (lethal poison)
*Dibenzacridine
*Polonium 210 (a radioactive element)
DDT (insecticide)

*known carcinogenic substances "