What are these spots? And why are they there?

Question

I found these spots on google maps in the north of BC.

http://www.google.ca/maps?f=q&hl=en&geocode=&q=+Mackenzie,+British+Columbia&ie=UTF8&t=h&ll=54.414135,-123.083267&spn=0.176612,0.42572&z=11&iwloc=addr

They kind of look like farms or perhaps clearcuts (some of them are brown and some are light green) or are they some kind of mining operations?

What are they and why so many?

Thanks

Answer 1

they do alot of lumber work.

http://www.mackenziebc.com/