Missile silos are fixed missile launching pads. if this is what you are refering and not mixing this with storage sites then the answer is NO.
all our missiles are based on mobile launching systems where these are carried by heavy transporter trucks with launch assembly. these can be moved to desired location and fired from these trucks/laumchers.usually the battery is accompanied with another trasporter that is not a launch vehicle but only carries two missiles for back up. once the launcer vehicle fires the missile it is carrying it can then be reloded using a new one from trasport vehicle.
since all our missiles are strategic to indermediate range so we do not need big fixed missile silos, it takes lots of money to build and mantain these. moreover, all the site required extensive defensive installation from personal to air defence misiles.the is a big budget constrain.
also the fact is the mobile launch is much better considering its cost and also as these take some work to be detected in war time by enemy as these are always on the move. in fixed silos, even google earth will point out the hot spots and these can be taken out easily.
i hope you have got your answers. again, this is for Silos and not storatge sites
regards!
Arsalan Aslam