She called for "proper guidelines" to be enforced, proper supervision of staff and accountability when things went wrong.

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"We want to ensure that any works that are carried out are done by competent contractors under proper supervision, " he added.

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"The difference was due to good workmanship and proper supervision, " says Professor Mohsen Ghafory-Ashtiany, president of the International Institute of Engineering and Seismology in Tehran.

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Now that Morgan Stanley and Goldman Sachs, the last two remaining big independent Wall Street firms, have converted to bank holding companies, a legal switch that placed them under the regulatory authority of the Federal Reserve, Mack insists that proper supervision is in place.

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Visitors will be able to dig on the ruins, but it will all be done under proper academic supervision.

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Medical studies prove the reduced health-care costs of senior citizens, who engage in moderate daily exercise in a proper facility under supervision of a physical therapist certified in geriatric care.

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Under the so-called Family Intervention Projects, they will be given intensive 24-hour supervision to make sure children attend school, go to bed on time and eat proper meals.

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