Displays of hard coal deep mining in aerial photos
Deep hard coal mining manifests itself in the landscape in a specific way: primarily through anthropogenic landforms and secondarily through land cover changes not directly related to mining activity. This article focuses on the identification
of primary and secondary displays of deep hard coal mining in aerial photos as well as the interpretation of elementary landscape processes that are conditioned by mining. - (EN)
A new technique for non-destructive field measurement of rock-surface strength : an application of the Equotip hardness tester to weathering studies
Tafone-like depressions have developed on the Aoshima sandstone blocks used for a masonry bridge pier in the coastal spray zone. To evaluate quantitatively the strength of the thin weathered layer, the hardness was measured at the surface
of the sandstone blocks using both an Equotip hardness tester and an L-type Schmidt hammer. This article first describes the results, and secondly evaluates the usefulness of the device in quantifying the degree of rock weathering.
Effect of rock hardness and moisture content on tafoni weathering in the granite of Mount Doeg-Sung, Korea
Relationships are investigated between growth processes of granite tafoni and rock properties such as rock hardness and moisture content. Field evidence shows that the rock surface of the inner backwalls and ceiling of tafoni have reduced hardness
The influence of waters from hard-coal mines on the hydrochemical relations of Upper Silesian Coal Basin (USCB) rivers
This paper is an attempt to estimate the influence of minewater discharge from the hard coal mines of USCB on the shaping of the hydrochemical conditions of river waters, considering mostly salinity and the salt load removed from this area
Equotip hardness for weathered surface layer of tuffaceous sandstone at Yagura artificial caves in Kamakura City
Aoki and Matsukara (2004) have indicated that the Equotip Hardness Tester may be more suitable than the Schmidt hammer for finding the strength of a weathered layer. The AA. apply it to man-made caves known as Yagura which have been severely damaged
Les hard-discounters ou magasins de vente à marge bénéficiaire réduite ont pris une importance croissante en France depuis 1980 par une présentation dépouillée en assortiment limité de leurs produits, un approvisionnement international, des règles