PCG says 19 of 24 pressure valves, high-level alarm sensors of MT Terra Nova sealed;<br /><br />Bataan eyes to declare state of calamity;<br /><br />8 cavite towns placed under state of calamity due to Bataan oil spill;<br /><br />Lower House to probe Bataan oil spill;<br /><br />DOH warns vs harmful effects of oil spill to human health
