Step 1: Understand classification of minerals in MMDR Act.
The MMDR Act 1957 classifies minerals into two categories:
- Major minerals (regulated by Central Government)
- Minor minerals (regulated exclusively by State Governments)
Examples of minor minerals include sand, gravel, ordinary clay, building stone, etc.
Step 2: Administrative powers under the Act.
For minor minerals, the Act clearly delegates powers of:
- granting quarry leases
- granting mining permits
- prescribing rules for extraction
to the State Governments alone.
Step 3: Why the Central Government is not involved.
The Central Government has no approval or supervisory role in granting leases for minor minerals. It only issues guidelines but the implementation and permit approval is the exclusive responsibility of the State Governments.
Thus, the correct option is (A).
Final Answer: The State Government alone has the authority to issue permits for minor minerals.
Reciprocal levelling is performed for points P and Q by placing the same levelling instrument at A and B. The observations of staff readings are tabulated as below. 
If the Reduced Level (RL) of P is 115.246 m, then the true RL of Q, in m, is _______ (rounded off to 3 decimal places)
The information of a mining project for a life of three years is given below:
Additional data: Applicable tax rate = 30%
Discount rate = 10%
Depreciation method: Straight line with zero salvage value
Data from a borehole log with collar elevation at 590 mRL are given below. Composite grade is calculated using cores of 5 m above and below the reference bench at 580 mRL. The composite grade, in %, is: