Britain’s coal industry is in its death throes. Just a handful of working surface mines remain in operation, while generation is declining sharply ahead of a government commitment to take action to regulate the closure of unabated coal power generation units by 2025. Nevertheless, the legacy of coal retains a staggering impact. According to estimates from The Coal Authority (TCA), the non-departmental public body responsible for managing the effects of past coal mining, coalfields cover 11% of Britain. Seven million properties are in coalfield areas, the body estimates, with 1.5 million of those properties sitting on shallow workings – the most susceptible to risk.