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  2. Water supply and sanitation in Gibraltar - Wikipedia

    en.wikipedia.org/wiki/Water_supply_and...

    There are presently two separate public water systems in Gibraltar – one providing potable water and the other salt water for flushing toilets, firefighting, street cleaning and other sanitary purposes. The salt water system pumps nearly 4,000,000 cubic metres (140,000,000 cu ft) annually, about four times the volume of potable water. [24]

  3. Cable barrier - Wikipedia

    en.wikipedia.org/wiki/Cable_barrier

    All cable barrier systems available today are approved at either TL-3 or TL-4. There is a great deal of anecdotal evidence, however, that many of these systems are performing at a higher level in the field capturing vehicles as large as semi truck-trailer combinations .

  4. Communications in Gibraltar - Wikipedia

    en.wikipedia.org/wiki/Communications_in_Gibraltar

    Site of the first telephone exchange in City Mill Lane. The first submarine telegraph cable started its operation in Gibraltar in 1870. [1] Gibraltar was a landing point of the long-range submarine cable that from Porthcurno, in the United Kingdom ran to Lisbon, Gibraltar, Malta, Alexandria, Suez, Aden, Bombay, over land to the east coast of India, then on to Penang, Malacca, Singapore ...

  5. Tunnels of Gibraltar - Wikipedia

    en.wikipedia.org/wiki/Tunnels_of_Gibraltar

    Entrance to the Prince's Gallery, excavated in 1790. The tunnels of Gibraltar were constructed over the course of nearly 200 years, principally by the British Army. [1] Within a land area of only 2.6 square miles (6.7 km 2), Gibraltar has around 34 miles (55 km) of tunnels, nearly twice the length of its entire road network.

  6. Multi-barrier approach - Wikipedia

    en.wikipedia.org/wiki/Multi-barrier_approach

    A secure water supply network—Providing a disinfectant residual to the extreme points of the distribution system protects against water quality degradation and microbial intrusion. Monitoring programs—Monitoring water quality at each of the above points (source, treatment plant, and tap) allows the treatment process to be adjusted to deal ...

  7. Cable protection system - Wikipedia

    en.wikipedia.org/wiki/Cable_protection_system

    A cable protection system (CPS) protects subsea power cables against various factors that could reduce the cable's lifetime, when entering an offshore structure.. When a subsea power cable is laid, there is an area where the cable can be subjected to increased dynamic forces the cable is not necessarily designed to withstand over its lifetime.