A boiler is a closed vessel in which water or other fluid is heated. The heated or vaporized fluid exits the boiler for use in various processes or heating applications, including boiler-based power generation, cooking, and sanitation.

The pressure vessel in a boiler is usually made of steel (or alloy steel), or historically of wrought iron. Stainless steel is virtually prohibited (by the ASME Boiler Code) for use in wetted parts of modern boilers, but is used often in superheater sections that will not be exposed to liquid boiler water. In live steam models, copper or brass is often used because it is more easily fabricated in smaller size boilers. Historically, copper was often used for fireboxes (particularly for steam locomotives), because of its better formability and higher thermal conductivity; however, in more recent times, the high price of copper often makes this an uneconomic choice and cheaper substitutes (such as steel) are used instead.

For much of the Victorian "age of steam", the only material used for boilermaking was the highest grade of wrought iron, with assembly by rivetting. This iron was often obtained from specialist ironworks, such as at Cleator Moor (UK), noted for the high quality of their rolled plate and its suitability for high-reliability use in critical applications, such as high-pressure boilers. In the 20th century, design practice instead moved towards the use of steel, which is stronger and cheaper, with welded construction, which is quicker and requires less labour.

Jamie Smith (known by the stage name Jamie xx) is an English music producer and remix artist, who gained fame both as solo act and as a member of the London-based band The xx.

Smith's musical career began in 2007 when he joined The xx accompanying old school friends Romy Madley Croft, Oliver Sim, Baria Qureshi of the Elliott School in London, notable for alumni including Hot Chip, Burial and Four Tet. He first used the stage name Jamie xx in July 2009 in a promotional mix for the band's début album xx released on the FACT mix series of the FACT Magazine. The mixtape was compiled by Jamie Smith and featured amongst others four tracks credited to Jamie xx - one own production and three remixes. The xx album went on to become platinum in the UK. Afterward, Jamie Smith went on to do more remix work for artists like Florence + The Machine, Adele, Jack Peñate and Glasser.

In late 2010, a Jamie xx remix of the song "NY Is Killing Me" from Gil Scott-Heron's last album I'm New Here aired on radio stations across the UK and Europe. The remix of "I'll Take Care Of U" followed in January 2011. Both singles drew the attention of the general public and the critics. They set the way for a 13-track remix album entitled We're New Here, produced entirely by Jamie xx and credited to "Gil Scott-Heron and Jamie xx". The album was released on February 21, 2011 on the XL Records label, but a full album preview could be streamed on the website of The Guardian as early as February 14.We're New Here received positive critical acclaim and was named "masterpiece in its own right" by BBC's Ele Beattie.

Ellen Allien, born Ellen Fraatz, is a German electronic musician, music producer and founder of BPitch Control music label. She lives in Berlin, Germany. She sings in both German and English. She has said that one of the main inspirations for her music is the culture of reunified Berlin; her album Stadtkind was dedicated to the city. Her music is best described as a blend of IDM and electro music, which is dance-floor oriented, yet at the same time has noticeable experimental elements.

Ellen was born in Berlin. Her father played guitar and piano. During 1989, she lived in London where she first came into contact with electronic music. When she later returned to Berlin, electronic music had become increasingly popular in Germany. In 1992, she became resident DJ in the Bunker, Tresor and in E-Werk. She started her own show on the Berlin radio station Kiss-FM and created her own record label, calling them both "Braincandy". Due to discrepancies with disk sales, she gave Braincandy up in 1997 and instead, organized parties with the name, "B Pitch". Allien created the label BPitch Control in 1999. The label's releases from Sascha Funke and Tok Tok were particularly successful. Allien released her first album, Stadtkind ("city child"), in 2001, and Berlinette in 2003, After releasing Thrills, Allien created a BPitch sub-label for minimal tech and minimal house, called "Memo Musik", in 2005. Orchestra of Bubbles, in collaboration with Apparat, featurings songs like "Way Out" and "Jet", was released in 2006.

Seth Troxler is an American born electronic music producer and DJ now residing in Berlin, Germany.

Seth Troxler was born in Kalamazoo, Michigan but grew up in suburban Detroit. As a child, thanks to godfather S.F. Kapoor, Troxler became aware of house music, as he says in an interview with electronic and dance music Ezine RA: "I started listening to house when I was seven or eight years old." This early exposure to house music seems obvious, since both his mother and his stepfather were involved in the Detroit house music scene. As a teenager, Troxler got a job in the record store Melodies and Memories, working alongside people such as Reggie Harrell, Terrence Parker, and even Theo Parrish. Later on, at the age of 16, Troxler began DJing. three years after graduating from Lake Orion High School, Troxler, together with fellow house music enthusiast Ryan Crosson, moved to Berlin, where he now resides working full time as a producer and DJ. He is well known for his upbeat tuneage and is soon going to be releasing records on a well-known German label with Bill Patrick, Lee Burridge, Little Mike and Catz n Dogz

Guy Gerber (born in 1975 in Holon,near Tel Aviv) is an electronic DJ/producer and musician who specializes in making music with synthesizers and live instrumentation in the techno scene and beyond. Gerber regularly DJs across the globe at events in Detroit, Berlin, Ibiza and the UK.

At the age of 15, Gerber was a member of the Israeli Under-16 national football team but soon developed the passion for music and found himself drawn to English guitar acts like Joy Division and My Bloody Valentine. Consequently, his harmonic, shoe-gaze inspired sound was a style that saw Gerber record for various European electronic labels including ‘Stoppage Time’ for John Digweed’s Bedrock imprint.

Gerber’s first full length album ‘Late Bloomers’ was released on Sven Väth’s Cocoon imprint in June 2007 and featured two worldwide club hits in ‘Belly Dancing’ and ‘Sea Of Sand’ which he recorded with his Israeli production friend Shlomi Aber. In addition to his productions, Guy also found time to remix New Order and Dominik Eulberg as well as setting up his own label Supplement Facts. More recently, he’s remixed ‘The L Word’ by Deniz Kurtel and ‘Hungry For The Power’ by Azari & III.