11.   Primary ingredients were purchased in countries such as South Korea or Brazil that had expert chemists, then processed in free ports or clandestine laboratories in Belgium or Italy.

12.   Several clandestine laboratories shut down and heroin prices shot up along the Thai-Burmese border due to a shortage on the Thai black market, the report said.

a. + laboratory >>共 464
national 3.03%
independent 2.74%
medical 2.67%
private 2.59%
forensic 2.38%
new 2.23%
nuclear 2.02%
federal 2.02%
testing 1.87%
state 1.59%
clandestine 0.86%
clandestine + n. >>共 300
radio 6.59%
meeting 4.76%
group 4.76%
operation 4.00%
immigrant 3.03%
program 2.16%
organization 1.95%
weapon 1.84%
immigration 1.84%
service 1.62%
laboratory 1.30%
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