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INTRODUCTION Key and Lock Mechanism This diagram shows the way a key opens its corresponding lock. When the key is inserted into the lock, its grooves raise spring-loaded pins of corresponding sizes. This permits the key to turn the cylindrical plug and open the lock. Only a key with grooves that exactly correspond to the size of the pins will permit the plug to rotate in the lock barrel. Lock (fastening device) , mechanical device used for fastening doors, chests, and lids, consisting essentially of a bolt guarded by a mechanism released by a key or a combination. Mechanical Bolt Lock   Mechanical Bolt Lock A bolt lock functions when a key is inserted into the notch, or talon. The key moves the bolt backward or forward, depending on whether the user is opening or closing the lock. Encarta Encyclopedia Michael Boys/Corbis ...

© Getty Images/Finnbarr Webster Prince Harry Prince Harry reportedly has a secret Twitter account that he uses to follow royal correspondents. Royal commentator Omid Scobie is convinced that the Duke of Sussex has a Twitter account, where he uses a fake name. He told Yahoo’s The Royal Box that the Duke of Sussex himself has told him that he follows several royal correspondents to see what they are up to. Prince Harry also wants to always be in the know when it comes to what is being written about his wife, Meghan Markle. “He would come up during a royal tour and say, ‘I saw what you wrote yesterday’ and ‘I’ve got my eyes on you.’ It was all very fun but I think Harry does pay close attention to what’s being written about him and of course now, his wife,” Scobie said.  There have also been reports claiming that Markle created her own secret Instagram account over the holidays. However, online trolls made her feel unsafe. But a few days later, the social media account was sudde...

Willy Caballero is in line to earn a new Chelsea contract – as long as the club can fill their home-grown quota. Goalkeeper Caballero won widespread praise for the way in which he coped with Kepa Arrizabalaga’s refusal to be replaced by him in Chelsea’s Carabao Cup final penalty shootout defeat to Manchester City. It is understood that Chelsea had already hoped to offer Caballero a 12-month extension to his contract that is due to expire at the end of the season before the Kepa incident.  But his reaction has further strengthened the feeling around the club that the 37-year-old Argentine should be kept on due to his professionalism on and off the pitch.   Chelsea are currently assessing how they will fill their Premier League and European home-grown places next season, with Gary Cahill, Danny Drinkwater and Victor Moses all expected to leave, and 39-year-old Robert Green’s contract also due to expire. The Blues generally fill one of their home-grown spots with a goalkeeper, w...

Nigerian Immigration Service Qualification Before obtaining the  Nigerian Immigration Service Recruitment 2019 , you need to be eligible with the following West African School Certificate (WASC) or Senior Secondary School Certificate (SSSC) with credits in not less than three (3) Subjects including English Language and two (2) other Subjects, or National Examination Council (NECO)/General Certificate of Education (GCE) Ordinary Level with passes in four (4) subjects obtained at one sitting or five (5) subjects obtained at two sittings including English Language.  NIS Recruitment Form  2019 Requirements  The Requirements for obtaining  2019 Nigerian Immigration Service Recruitment Form  is listed below. So if you wish to get the form, you must strictly adhere to the requirements below. Applicant must be a Nigerian Citizen by birth or descent Applicant must not be less than 18 years or more than 35 years of Age Not less than 1.7 meters in...

MultiChoice, the organizers of most popular Nigerian TV reality show, Big Brother Naija, has released its timetable and plans for this year’s event.  TV show to an exclusive reunion show and special pop-up channel on DStv and GOtv starting in March. It revealed that BBNaija pop-up channel will open on Friday, 1 March at 10 am and will run till Sunday, 31 March at midnight on DStv channel 198 and GOtv channel 29 and feature highlights from the previous two seasons – See Gobbe and Double Wahala.  The excitement goes a notch higher with a special reunion show which will air from Monday, 18 March to Sunday, 31 March and feature the stars of the BBNaija Double Wahala season. The BBNaija pop-up channel is available to active customers on DStv Premium, Compact Plus, Compact, Family, Access and GOtv Max and Plus. This has been the most anticipated BBNaija season yet since the announcement of its return for a fourth season in January. Auditions for the show recorded a massive turnout ...

© Provided by AFP The United States is offering a $1 million reward for information on Hamza bin Laden, seen here in a video grab by the CIA The United States on Thursday offered a $1 million reward for information on a son of late Al-Qaeda leader Osama bin Laden, seeing him as an emerging face of extremism. The location of Hamza bin Laden, sometimes dubbed the "crown prince of jihad," has been the subject of speculation for years with reports of him living in Pakistan, Afghanistan, Syria or under house arrest in Iran. "Hamza bin Laden is the son of deceased former AQ leader Osama bin Laden and is emerging as a leader in the AQ franchise," a State Department statement said, referring to Al-Qaeda. The State Department said that it would offer $1 million for information leading to his location in any country. Bin Laden, who according to the United States is around 30, has threatened attacks against the United States to avenge the 2011 killing of his father, ...

A file photo of the SGF, Mr Boss Mustapha. The Secretary to the Government of the Federation, Mr Boss Mustapha, says the Federal Government will implement the New Minimum Wage of N30,000. Addressing reporters on Thursday in Abuja, he stated that the government was committed to the implementation, despite the increase from N27,000 to N30,000 by the House of Representatives. “Look at where we took it from; from N18,000 as a minimum wage,” Mr Mustapha said. “What is before the House of Representatives is N30,000, although our recommendation is N27,000.” The SGF further disclosed that the government has made adequate arrangement in the 2019 Appropriation Bill, to cater for the new wage. He explained that the importance of this was to give workers across the country a reasonable wage, adding that President Muhammadu Buhari does not take the welfare of workers for granted. Mr Mustapha said, “We have made adequate provision in the 2019 budget; we mean well for the good workers of ...