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it's an underground mining method. The base of a block is cut and helped for gravitation and tensional states the block start to break. In a inferior level the rock is transported to a plant.

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What is the Method of work for Concrete Masonry Block construction?

what is the weight of concrete block work per cubic meter.


Describe different ways that a function can handle errors?

There are two ways. The method can have a try catch block and handle the error/exception inside the method. Or The method can throw the exception under the assumption that the calling method would have the code to handle the exception that is thrown by this method


When do you say an exception is handled?

There is no catch block that names either the class of exception that has been thrown or a class of exception that is a parent class of the one that has been thrown, then the exception is considered to be unhandled, in such condition the execution leaves the method directly as if no try has been executed


If a method calls another method and that method throw an exception then caller method must be throw that exception or not?

If method A calls method B and method B throws an exception, then method A must handle that exception. It does not have to throw the exception if it is in a try-catch block, but it must do something to deal with it.Note that this only applies to checked exceptions. If method B throws an unchecked exception, then A is allowed to ignore it.


What type of mine involves digging tunnels and shaft deep underground?

The type of mine that involves digging tunnels and shafts deep underground is called an underground mine. This method is used to extract minerals and ores located deep beneath the Earth's surface, where open-pit mining is not feasible. Underground mining techniques include room and pillar, cut and fill, and block caving, each designed to safely access and remove valuable resources while minimizing surface disruption.