Through the 1960s on the mid-eighties, reductive amination was the method of option for clandestine methamphetamine manufacturing. Enterprising biker gangs who dominated the trade at this time mostly ran these functions. (The slang time period “crank” for methamphetamine allegedly originated from bikers transporting meth within the crankshafts in their bikes. https://fernandospdrc.weblogco.com/29803033/indicators-on-blue-copyright-for-sale-you-should-know