Contents
Dumitru FODOR
Preoccupations and accomplishments concerning the use of explosives with a view to extracting hard rocks
Iuliana Veronica GHEŢIU
Aspects on optimizing the transport of crude oil through collector pipes
Dan RĂDĂCINĂ, Lazăr AVRAM
Optimization for some design elements of the drill string
Georgeta Claudia NICULAE
Aspects regarding the functional design of two-chamber hydroacoustic filters