Sentence:  Subject to the limitations of this Act , the Secretary shall make stabilization payments to <WSD>small</WSD> domestic producers upon presentation of evidence satisfactory to him of their status as such producers and of the sale by them of newly mined ores , or concentrates produced therefrom , as provided in this Act . 
Meaning of the word marked with <WSD> tags:  limited or below average in number or quantity or magnitude or extent