[Jrainman]

Most of my 36 yr career has been spent in the specialty feild of breeching and generater exhust system erecting in NYC , but where not talking house generators , or boilers , multible generators and boilers the size of your house creating thousands of horsepower or millons of BTUs , hundreds of feet of specilized exhaust pipe up to 60 inch in diameter with lots of welding and structual frame work in building interiterior shafts for hundreds of feet ,so you spend most of your day hanging in a boatsmen chair (bosin chair) or pulling , fitting and welding , massive exhaust systems and todays systems have so many add on like scrubbers and condensers to utilize the the tremendous heat from generator exhaust and take advantage of the waste and utilize it for heating purposes throught the building . they have become so efficent they run them 24/7 and power whole buidings rather then buy electric from the power company. and if designed correctly they sell power to power company. the work is heavy ,and sometimes dirty like if you are lining and old brick free standing stack like you see at a power company ,first you have to start at the top and cut out the old breeching 3/8-1/2 thick steel casing you in a chair and a demo saw till you get to the bottom then you get to build the new liner .this work is not for everyone but it has paid the bills for 18 years now.