http://www.articleheaven.net en-us editorial@articlealley.com Drains and pipes of all types generally get blocked at some point. They also get worse over time and need maintenance ultimately. Any industry that waits until this happens is not staying ahead of the game, and is therefore not keeping a watch on effici... http://www.articleheaven.net/mini-excavator-1334340.html 08th January 2010