In Peter Abraham's work Mine Boy, who said he would help Xuma get a job in the mines?

In Johannesburg, where Xuma has come with big hopes of earning money, he meets Leah, who makes a living by selling alcohol and staying away from being captured by the law. What Xuma finds in the city is destructiveness and disillusionment. The men and women of Johannesburg look all beaten down and hopeless to Xuma and he sees from Leah that it is harder to make money and make a success of yourself than he believed ti would be. The Leah introduces Xuma to a friend of hers named Johannes, who is a boos boy at the mines. Johannes tells Xuma he will help him get work at the mines. Even though Xuma gets work he begins to feel a deep inferiority because of the superior attitude of the white men running the mine.