The present invention provides a ground flooring device, system and method which includes connectable slats or panels having connection means which allow a series of slats to be quickly assembled, rolled up for storage or transport, and unrolled for deployment. The lower part is a partial workpiece which is made of a solid piece of metal shaped by machining, forming a ready-to-use workpiece in conjunction with the upper part. The phytoestrogen compound is preferably a naturally occuring isoflavone and is present in an amount of more than 0.