Just so we are clear about this particular waste let me explain directly from the European Topic Centre on Sustainable Consumption and Production: CND waste includes soils, concrete, bricks, glass, wood, plasterboard, asbestos, metals and plastic.

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Our only complaint with Airport has been that, while the signal passed through plasterboard and brick--letting us stay online even while enjoying fresh air in a courtyard a floor below and 100 feet from the base station--we had an intermittent connection from the room opening out into that courtyard.

FORBES: Magazine Article