Here in the USA, this is rather unlikely - WHY?
If you're moving material around internally on a site you own - have at it!
But - In order to either import or export material to a construction site, there are effectively chain of custody documents that come with soil, sand, clay etc. showing where the material came from, where its going to and lab test results showing the chemical make-up of the material - Why?
1. Environmental Contamination
Taking contaminated material off your site and taking it to another site causes harm & damage to the property owner receiving it - resulting in litigation regarding who is cleaning up and remediating the site where contaminated material was dumped.
2. Cost - It has to be less expensive to import sand from a local supplier than it is to mine it, truck it to a port, load it on a ship, ship it halfway around the world, unload it then take it to the site requiring sand.
Just my $0.02