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  _____      ___     ______      ___    __    __  
 / ____||   / _ \\  |      \\   / _ \\  \ \\ / // 
/ //---`'  / //\ \\ |  --  //  | / \ ||  \ \/ //  
\ \\___   |  ___  |||  --  \\  | \_/ ||   \  //   
 \_____|| |_||  |_|||______//   \___//     \//    
  `----`  `-`   `-` `------`    `---`       `

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Text this: STUDY OF JAMBI COAL DUST CONCENTRATION 53-44 ?m EFFECT ON EXPLOSION PPRESSURE USING SIWEK 20-L CHAMBER