LONDON (AP) – A solemn Queen Elizabeth II marked a minute of silence Saturday for victims of the London high-rise inferno that killed at least 30 people as exhausted firefighters continued their grim search for more bodies. Public anger was mounting as residents and neighbors demanded answers for how the blaze spread so quickly amid reports that contractors installed a cheaper, less flame-resistant type of exterior paneling in a renovation of Grenfell Tower that ended in May 2016. Around 70 people are missing, according to Britain’s Press Association, and identification of the victims is proving very difficult. British health authorities say that 19 patients are still being treated at four London hospitals. Of those, 10 remain in critical condition. The queen marked her official birthday Saturday by saying Britain remains “resolute in the face of adversity” after the horrendous fire and recent extremist attacks in London and Manchester. The 91-year-old monarch said it is “difficult to escape a very somber mood” on what is normally a day of celebration. The queen and her husband, Prince Philip, stood silently on the steps of Buckingham Palace before the start of the Trooping the Color that each year marks the queen’s official birthday,