Las principales novedades de la industria en la década de 1930 incluyeron la introducción del carro tanque de transporte, odorización del gas, y la construcción de plantas locales de llenado de botellas.
Radio The Broadcasting Act 1996 saw changes to local radio concentration rules such that up to three radio licences serving the same area may be held by the same person or company, provided there is at least one licence on each of the AM and FM bands.Subsequent applications for ownership are subject to a public interest test.WikiMatrix WikiMatrix