Someone may be hesitated to buy a new mud tank or to repair the used mud tank.
You still worry about the long lead time for new-building tank?  
You consider the new-built tank is more expensive than used?

Airport civil engineering comprises design, tendering, contracting and supervision services in connection with runways, taxiways, aprons and landside access facilities.The design of airport civil works requires the knowledge of pavement specialists due to the extreme loads that the pavement is exposed to from the heavy aircraft in different climatic conditions ranging from extreme cold weather in the arctic to hot weather in the tropics. At the same time,