Sky News has been given unprecedented access to the secret industrial super-labs of one of Mexico's most powerful drug cartels.

VOICED: Sky News has been given unprecedented access to the secret industrial super-labs of one of Mexico's most powerful drug cartels. The country's drugs war has claimed the lives of 84 thousand people in gangland killings over the past seven years, as competing groups fight for the control of trafficking routes into the United States and Europe. It's estimated illicit Mexican drugs sales are worth as much as 50 billion dollars a year. Our Chief Correspondent Stuart Ramsay has this exclusive report. Interviews with anonymous drug cartel members and Loan Grillo, author of 'El Narco' on July 09, 2015 in Juarez, Mexico.