A failure mode and effect analysis (FMEA) was applied to improve the design of concrete ties in ballasted track for North American heavy haul applications. A literature review was conducted on concrete tie failure modes, failure effects, and failure causes. A survey of railroads and transit authorities in North America provided a ranking of the most critical concrete tie failure modes. The most...

abandoned surface mine excavations can be a major environmental, social and/or human healthproblem for the mining industry as well as for the community living nearby. this problem is exacerbated by therapidly growing population encroaching on areas of historic mined lands. the aim of this studywas to assess thesafety status of the historic nyala mine excavation with the purpose of coming up wit...

Gob-side entry retained with roadside filling (GER-RF) plays a key role in achieving coal mining without pillar and improving the resource recovery rate. Since there are few reports on cyclic length of GER-RF, method based stress difference is proposed to determine GER-RF. Firstly, stability analysis mechanics model immediate roof above area was established, then, relationship between distribut...

The Italian National Recovery and Resilience Plan (NRRP) includes, among other measures, investments in hydrogen vehicle refuelling stations, intending to promote the use of fuel cell electric vehicles (FCEVs) for long-haul freight transport. This paper evaluates impact that this action could have on CO2 emissions consumption, focusing a case study Campania region. proposed approach, which can ...

The activities of mining exploitation in Campo de Jales were performed in an uncontrolled way and gave rise to serious environmental contamination: rubbish depositories have been accumulated with no treatment or maintenance. An investigation developed around Jales Mine showed the existence of some chemical impact originated from the waste produced during mining activities. Some "black spots" fo...

The significant increase in transportation and heavy vehicle traffic has caused freeway routes with to face a decrease safety levels. Furthermore, fatigue sleepiness are proven be two of the main reasons road accidents, therefore focus on these issues is crucial. Factors such as “use engineering (safety) technology for transport”, “informing drivers various educational methods”, “controlling dr...

Abstract A major part of the European Union’s (EU) project Sustainable Intelligent Mining System (SIMS) is investigating development diesel-free/carbon–neutral underground mines in order to ensure sustainable mining future. Replacing diesel machines with electric vehicles hard rock has been widely acknowledged by industry worldwide as a critical step improve working conditions reducing exhaust–...