$阿尔法自然资源(ANR)$ Macquarie lowers its stock price targets on Alpha Natural (ANR -4.2%) to $0.60 from $1.15, on Arch Coal (ACI -1.9%) to $0.90 from $1.25, on BTU to $5.30 from $6.40, and on Consol (CNX -0.1%) to $29.50 from $31.50.