That's wool from an ugly sheep!

We usually call it " Rock Wool", fire / smoke stop insulation.

It depends what company you keep.

In impolite society...well, we won't talk about that here!

If you're in mining and manufacturing, you take slag residue from the smelting process and shred it, until it can be packaged into batts of insula-tion.

Either way, you're liable to find the subject prickly!

Insulation.

Possibly the only thing worse for a  pant choice material than polyester.   

I thought of the obvious answer but made a guess then went to Google and I was close.

Tony and Suzanne Marriott, Associate Brokers - Jennifer Mackay nailed it!

(I don't have the graphics you use for that....)

That black stuff they seal cracks with on the highway is called slag.  Does that mean some sheep got stuck to it? 

A thickening property to add to slag.

Insulation.

Oh heck...I don't know. 

Secondary cuttings off the sheep

I know there is a rock wool used as insulation in attics and wonder if this could be a cousin to that.

No idea.

A way to insult wool?

I'm going with Jennifer's answer.

One way of keeping warm.

I believe that is a type of insulation ... 

a wool-like material used for insulation....

No; Jennifer Mackay Nailed it!

Time for my magic wand . . . 

A mineral used for insulation and not for health!

Darn Jennifer Mackay beat me to it

thanks for teaching me something today

Again, I will need to rely on the wisdom of others.

Tony and Suzanne Marriott, Associate Brokers The wool they use to make baggy sweaters.

Are you insulating us with a new spin?

Sounds like a home you are showing wth a messy bed.