This paper summarizes and concludes on the mineral alteration features of explosive pipe breccia in rock-mass of Jiuquling on the basis of field works and taking mineral-deposits as examples.

本文在野外工作的基础上，以矿床为实例，对九曲岭岩体爆破角砾岩筒矿化蚀变特征，进行归纳和总结。

youdao

Putang gold deposit belongs to explosive breccia pipe type.

蒲塘金矿床属爆破角砾岩型。

youdao

Mr Pack said that officials found an explosive device inside the pipe, as well as another device inside the bunker.

BBC: Alabama hostage-taker died 'in firefight'

After the rescue, authorities found the pipe packed with explosives along with another explosive inside the bunker itself, authorities said.

CNN: Inside the bunker: From storm shelter to boy's prison

As it turned out, authorities' decision to rely on every tool at their disposal was a wise one: Dykes had planted an explosive device in a ventilation pipe he'd told negotiators to use to communicate with him on his property in the rural Alabama community of Midland City, and also placed another explosive device inside the bunker, the FBI said in a statement late Tuesday.

WSJ: Military tactics, arms, helped rescue Ala. hostage