CONSTRUCTION OF NEW MULTI-FUNCTION TYPE ARTIFICIAL BOUNDARY PILLAR FOR TRANSITION FROM OPEN PIT TO UNDERGROUND MINING

CONSTRUCTION OF NEW MULTI-FUNCTION TYPE ARTIFICIAL BOUNDARY PILLAR FOR TRANSITION FROM OPEN PIT TO UNDERGROUND MINING

In allusion to the defects of large material consumption and high construction cost of conventional artificial boundary pillar for the transition from open pit to underground mining, a new multi-function type of artificial boundary pillar scheme of reinforced concrete is proposed, which creates favourable conditions for underground mining below the

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ON THE RECOVERY OF HEMICELLULOSE BEFORE KRAFT PULPING

To assess the feasibility of implementing hemicellulose recovery stages in kraft mills, Eucalyptus globulus wood samples were subjected to aqueous treatments with hot, compressed iphone 13 pro max price florida water (autohydrolysis processing) to achieve partial dissolution of xylan.Autohydrolyzed solids were subjected to kraft pulping under selec

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