Question: Everest was a brand of cigarettes that were smoked by which English recording studio audio engineer?

Context articles: Jimmy Rollins (musician)
Bruce Jackson (audio engineer)
Double Diamond (cigar)
Audio engineer
Phil McDonald
Geoff Emerick
Everest (cigarette)
Joe Mabbott
Malcolm Toft
Recording studio

Jimmy Rollins "(né" James Rollins) is an American guitarist, songwriter, audio engineer, and record producer from Dallas who flourished in the 1950s, playing guitar on recordings as sideman with Lefty Frizzell, Billy Walker, Marty Robbins, and Sid King and the Five Strings.
 Rollins composed songs recorded by Connie Smith, Jean Shepard, and Porter Wagoner.
 As an audio engineer, he worked at the Jim Beck Studio in Dallas during the mid-1950s and in 1956, he worked at Tom Merriman's recording studio at 3104 Maple Avenue, Dallas.
Bruce Robert Jackson (3 June 1949 – 29 January 2011) was an Australian audio engineer who co-founded JANDS, an Australian audio, lighting and staging company.
 He joined American touring audio engineer Roy Clair and mixed concert stage monitors for Elvis Presley in the 1970s.
 With Clair Brothers, a concert sound company, Jackson designed audio electronics including a custom mixing console.
 Beginning in 1978, Jackson toured as Bruce Springsteen's band engineer for a decade, using Clair Brothers sound systems.
 A business interest in Fairlight CMI in Sydney introduced Jackson to digital audio, and he subsequently founded the digital audio company Apogee Electronics in Santa Monica, California, where he lived at the time.
 After selling his share of Apogee, Jackson co-founded with Roy and Gene Clair a joint venture which produced the Clair iO, a loudspeaker management system for control of complex concert sound systems.
 Jackson turned the venture commercial with the help of Dave McGrath's Lake Technology.
 Dolby Laboratories bought the technology and formed Dolby Lake with Jackson as vice president, then in 2009 Lab.gruppen acquired the brand.
 Jackson was honoured with the Parnelli Innovator Award in 2005 for his inventive loudspeaker controller.
Double Diamond is a cheap popular brand of filtered cigars.
 These cigars are predominantly natural tobacco mixed with many other additives.
 The cigars have a similar striking resemblance to regular cigarettes and are sold in packs of 20 like most other major brands of cigarettes.
 Although there are many rumors that these cigars are healthier than regular cigarettes, they are actually much worse for the human body, especially the lungs.
 However, the nicotine content in Double Diamonds is very mild and nicotine addiction is less likely to occur if smoked in moderation.
An audio engineer (also sometimes recording engineer or a vocal engineer) works on the recording, manipulating the record using equalization and electronic effects, mixing, reproduction, and reinforcement of sound.
 Audio engineers work on the "...technical aspect of recording—the placing of microphones, pre-amp knobs, the setting of levels.
 The physical recording of any project is done by an engineer ... the nuts and bolts."
 Many audio engineers creatively use technologies to produce sound for film, radio, television, music, and video games.
 Audio engineers also set up, sound check and do live sound mixing using an audio console and a sound reinforcement system for music concerts, theatre, sports games and corporate events.
Philip McDonald is an English recording studio audio engineer, best known as the engineer for EMI and later for Apple Records during the Beatles' studio years, along with Geoff Emerick and others.
 McDonald joined Apple as a senior balance engineer, at the age of 25.
 Aside from his work on Beatles albums, he was responsible for engineering on recordings by John Lennon, George Harrison, the Shadows, Paul McCartney, Ringo Starr, Roy Harper Rhead Brothers, Roger Daltrey, and Squeeze.
Geoffrey Emerick (born 1946) is an English recording studio audio engineer.
 He worked with The Beatles on their albums "Revolver", "Sgt. Pepper's Lonely Hearts Club Band", "The Beatles" and "Abbey Road".
Everest cigarette is a cigarette brand, manufactured, distributed and market by the Zimbabwe arm of British American Tobacco company.
 Everest cigarette is also produced in Belgium, the Netherlands and South Africa.
<ref name="Tobacco/ Cigarette Ads of the 1960s"> </ref> During the recording of "Abbey Road", a 1969 album by The Beatles, audio engineer Geoff Emerick used to smoke Everests.
 The band liked the visual imagery of the packet and chose "Everest" as a working title for the album.
Joe Mabbott is an American record producer and studio audio engineer who has worked with many independent and mainstream artists of the 1990s 2000s and 2010s including Atmosphere, Snoop Dogg, Brother Ali, Cloud Cult and The Matches.
Malcolm Toft is an audio engineer and businessman who worked at Trident Studios, first as an audio engineer, then as the studio's manager, and eventually as co-founder of recording console maker Trident Audio Developments.
 Toft went on to form another console company, Malcolm Toft Associates, which eventually led to the founding of Toft Audio Designs and now to Ocean Audio.
 Toft is also co-owner of The Music Mill Studio.
A recording studio is a specialized facility for sound recording, mixing and audio production of instrumental or vocal musical performances, spoken words and other sounds.
 They range in size from a small in-home "project studio" large enough to record a single singer-guitarist, to a large building with space for a full orchestra of 100 or more musicians.
 Ideally both the recording and monitoring (listening and mixing) spaces are specially designed by an acoustician or audio engineer to achieve optimum acoustic properties (acoustic isolation or diffusion or absorption of reflected sound "echoes" that could otherwise interfere with the sound heard by the listener).