Top 10 reasons why any self-respecting Bond villain must own a cement company:

1. Grim post-industrial backdrop for child rapes/sacrifices.

2. You can get rid of a lot of bodies and bones without drawing too much attention to yourself.

3. You can shore up your smuggling tunnels.

4. You leave less of a paper trail when building your underground bases.

5. Cement blocks X rays. If for some reason your paid border guard isn't there to escort you through, it is unlikely that anyone will want to rummage through a bunch of nasty cement dust. You can smuggle drugs, guns, children, terrorists, etc. through Customs.

6. Even more cement will block gamma rays. You could smuggle a nuke in the center of a bulk freighter full of cement. Of course you will have your own docks, your own union, and your own truckers to handle it stateside.

7. You can sabotage critical infrastructure by spiking some of your cement with pyrite. You can always blame a disgruntled construction worker.

8. You can extend all of the above benefits to other Bond villains in exchange for sex slaves, pineal glands, small island nations, sharks with freaking laser cannons, etc.

9. It's a common commodity so you can adjust your prices, up or down, as a hidden way of making or taking payments.

10. Even the Mafia owns cement companies. You don't want do be outdone by those clowns, do you?