BUZZ-Saudi's Ma'aden edges up after earnings beat

** Shares in Saudi Arabian Mining Co (Ma'aden) climb 1.1 percent to 28.90 riyals ** It reported 35.3 percent fall in first-quarter net profit to 168.9 million riyals ($45.04 million) versus average estimate of three analysts of just 1.13 million riyals ** Sales declined 17 percent year-on-year because of lower product prices, but this was partially mitigated by 16 percent drop in direct costs and positive effects of initiative to reduce operating costs, says note by NCB Capital ** Saudi Arabia's