Surround your core holdings in shares with other types of investment, such as property, infrastructure and, yes, some bonds and you will, in time, see the value of diversification.

The next hours and days, said analysts, would test the ability of engineers to ensure that the thick steel walls that surround the core remain unbreached.

Moderator and shielding consisting of graphite, lead, water, and concrete surround the core.

The solenoid coil consists of many turns of copper wire that surround the core tube and induce the movement of the core.

Breeding designs surround the core by a breeding blanket of fertile material.