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Migration appears to be a determinant in health-care utilisation, particularly among the elderly in India. Ageing and migration are essential socio-demographic phenomena in the 21st century for developing and developed countries to establish better public health-care policies. This study aims to focus on the status and determinants of health-care utilisation among elderly migrants who have migrated after attaining the age of 45 and above.

This study used the data from the first wave of the longitudinal ageing study in India (LASI) in 2017–2018. Two outcome variables were used to examine the health-care utilisation, including in-patient and out-patient care. Binary logistic regression was used to explore the predictors of healthcare utilisation in terms of in-patient and out-patient care among the elderly migrant population.

A total of 82.9% of elderly migrants had visited out-patient care when they were sick, whereas 15.3% have used in-patient care. Enabling factors, such as wealth quintile and health insurance, and need factor, such as chronic disease and self-rated health, were more significant factors influencing the health-care utilisation.

This study contributes to our understanding of older migrants’ health-care utilisation. Focussing on this study’s outcome, policymakers and decision makers may consider improving older migrants’ access to health-care by raising their income level, offering local health insurance and health awareness programs.

Longwall mining is a special mining method with high productivity and smooth operation and the drum shearer is known as the most important component in longwall mines due to its direct role in the coal cutting and production process. Therefore, its reliability is important in keeping the mine production at a desired level. Hence, reliability analysis is essential in identifying and removing existing problems of this machine in order to achieve a better production condition. This paper seeks to learn about the reliability of the shearer machine in order to locate critical subsystems. The improvement of the reliability of the critical subsystems, to enhance the optimum operation of the shearer machine, is the main objective of this research.

A basic methodology was used in this paper for the reliability modeling of the shearer machine. First, failure and performance data from a two‐year period at the Tabas Coal Mine‐Iran was classified and sorted. The tests for validating the assumption of independent and identical distribution (iid) of TBF data are done and the best modeling method for each subsystem was selected among the renewal process, homogeneous Poisson process and non‐homogeneous Poisson process. Finally, the reliability of subsystems and the machine were assessed.

The study revealed that six important subsystems of the shearer machine are; water system, haulage, electrical system, hydraulic system, cutting arms, and cable system. Pareto analysis shows that the 30 percent of failures and stoppages of the shearer were related to the water system and this system is the most critical subsystem of the machine. The failure rate analysis shows that the failure rates of the hydraulic, haulage and electrical systems were decreasing, meanwhile, the failure rates of the water system, cutting arms and cable system were increasing. The reliability of drum shearer reaches the zero value after 100 hours.

This paper, for the first time, defines a practical set of subsystems for the coal shearer based on field data and machine design.