There are dust-exploitation red lines to be drawn, @Dan_Wood. Foremost in my concerns is belly-button fluff, which must have protected status in the commercialisation of mere dust.
There will be a frightful dust-up if this highly-prized commodity falls into the hands of buccaneers like No-Bags Dyson and Beardie. #notmynavel 
I can start with a good donation of dust if anyone wants it:joy:
No umbilical dust in your consignment, we trust, @Sue_Young? We have spies and informants everywhere #notmynavel 
No I promise-just large quantities of 1st class deep-mined under bed dust👍
I could be in the market for under-bed dust, provided I can mine the totally undisturbed dust using our own specialist technicians, to ensure it has not been subject to prior BBF extraction. Our terms include collection charges and professional sorting fees. #notmynavel 
I think it might be prudent to make a bid for Futures in Pocket Particles, could be a big winner or alternatively, if your more entrepreneurial, Invest in Handbag Mining Systems - although this depends on the owners giving access which, historically has proved difficult. For a smaller, but steady return, putting your money into Beards & Dandruff may be the way forward.
@Dan_Wood, “prudent…big winner…entrepreneurial…steady return …” 
With your market acumen and my exquisite and internationally-acclaimed ‘nose’ and ‘palate’ I think a business partnership would sweep the board, @Dan_Wood. 
Normal conspiracy-theory services will be resumed as soon as possible. We apologise for any inconvenience to readers.
We don’t just have dust… we have tumbleweeds… all along the corridor…
Our top landing is more like Arizona (idea from cowboy films)… but we do have an all-singing-all-dancing fire alarm… which will (apparently) “light-up the darkness” should disaster strike… 
Ouss, if that is how you spell, it goes hand in hand with dust.
So I’m not the only one…
From ‘Le courrier des lecteurs’, (La Manche Libre, Samedi 4 mai)
Comme tout un chacun, j’ai du mal à croire ce qu’on a vu à la télévision lundi 15 avril. Et pourtant…je fais alors cette suggestion, après un accident,c’est toujours plus facile : ne serait-il pas envisionable que lors de tels chantiers, une société de gardiennage assure la surveillance du site pendant toute la durée de l’absence des ouvriers et ce, sans aucune discontinuité de présence humaine. Ce serait sans aucune doute une charge bien modeste en égard au coût général de tels travails. Et j’ajoute cette interrogation: qui parmi nous n’a pas essayé de brûler dans sa cheminée des morceaux de très vieux chêne ? Pour les inflammer, il faut insister longuement et le feu ne démarrera que si l’on prend la précaution d’y adjoindre du petit bois…et souvent à plusieurs reprises!
Marcel Meslin, Annoville, Quettreville-sur-Sienne